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 6 Free Software Foundation, Inc. 7 This file is part of the GNU C Library. 8 9 The GNU C Library is free software; you can redistribute it and/or 10 modify it under the terms of the GNU Lesser General Public 11 License as published by the Free Software Foundation; either 12 version 2.1 of the License, or (at your option) any later version. 13 14 The GNU C Library is distributed in the hope that it will be useful, 15 but WITHOUT ANY WARRANTY; without even the implied warranty of 16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 17 Lesser General Public License for more details. 18 19 You should have received a copy of the GNU Lesser General Public 20 License along with the GNU C Library; if not, write to the Free 21 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 22 02111-1307 USA. */ 23 24/* This tells Alpha OSF/1 not to define a getopt prototype in <stdio.h>. 25 Ditto for AIX 3.2 and <stdlib.h>. */ 26#ifndef _NO_PROTO 27# define _NO_PROTO 28#endif 29 30#ifdef HAVE_CONFIG_H 31# include <config.h> 32#endif 33 34#if !defined __STDC__ || !__STDC__ 35/* This is a separate conditional since some stdc systems 36 reject `defined (const)'. */ 37# ifndef const 38# define const 39# endif 40#endif 41 42#include <stdio.h> 43 44/* Comment out all this code if we are using the GNU C Library, and are not 45 actually compiling the library itself. This code is part of the GNU C 46 Library, but also included in many other GNU distributions. Compiling 47 and linking in this code is a waste when using the GNU C library 48 (especially if it is a shared library). Rather than having every GNU 49 program understand `configure --with-gnu-libc' and omit the object files, 50 it is simpler to just do this in the source for each such file. */ 51 52#define GETOPT_INTERFACE_VERSION 2 53#if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2 54# include <gnu-versions.h> 55# if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION 56# define ELIDE_CODE 57# endif 58#endif 59 60#ifndef ELIDE_CODE 61 62 63/* This needs to come after some library #include 64 to get __GNU_LIBRARY__ defined. */ 65#ifdef __GNU_LIBRARY__ 66/* Don't include stdlib.h for non-GNU C libraries because some of them 67 contain conflicting prototypes for getopt. */ 68# include <stdlib.h> 69# include <unistd.h> 70#endif /* GNU C library. */ 71 72#ifdef VMS 73# include <unixlib.h> 74# if HAVE_STRING_H - 0 75# include <string.h> 76# endif 77#endif 78 79#ifndef _ 80/* This is for other GNU distributions with internationalized messages. */ 81# if (HAVE_LIBINTL_H && ENABLE_NLS) || defined _LIBC 82# include <libintl.h> 83# ifndef _ 84# define _(msgid) gettext (msgid) 85# endif 86# else 87# define _(msgid) (msgid) 88# endif 89# if defined _LIBC && defined USE_IN_LIBIO 90# include <wchar.h> 91# endif 92#endif 93 94#ifndef attribute_hidden 95# define attribute_hidden 96#endif 97 98/* This version of `getopt' appears to the caller like standard Unix `getopt' 99 but it behaves differently for the user, since it allows the user 100 to intersperse the options with the other arguments. 101 102 As `getopt' works, it permutes the elements of ARGV so that, 103 when it is done, all the options precede everything else. Thus 104 all application programs are extended to handle flexible argument order. 105 106 Setting the environment variable POSIXLY_CORRECT disables permutation. 107 Then the behavior is completely standard. 108 109 GNU application programs can use a third alternative mode in which 110 they can distinguish the relative order of options and other arguments. */ 111 112#include "getopt.h" 113 114/* For communication from `getopt' to the caller. 115 When `getopt' finds an option that takes an argument, 116 the argument value is returned here. 117 Also, when `ordering' is RETURN_IN_ORDER, 118 each non-option ARGV-element is returned here. */ 119 120char *optarg; 121 122/* Index in ARGV of the next element to be scanned. 123 This is used for communication to and from the caller 124 and for communication between successive calls to `getopt'. 125 126 On entry to `getopt', zero means this is the first call; initialize. 127 128 When `getopt' returns -1, this is the index of the first of the 129 non-option elements that the caller should itself scan. 130 131 Otherwise, `optind' communicates from one call to the next 132 how much of ARGV has been scanned so far. */ 133 134/* 1003.2 says this must be 1 before any call. */ 135int optind = 1; 136 137/* Formerly, initialization of getopt depended on optind==0, which 138 causes problems with re-calling getopt as programs generally don't 139 know that. */ 140 141int __getopt_initialized attribute_hidden; 142 143/* The next char to be scanned in the option-element 144 in which the last option character we returned was found. 145 This allows us to pick up the scan where we left off. 146 147 If this is zero, or a null string, it means resume the scan 148 by advancing to the next ARGV-element. */ 149 150static char *nextchar; 151 152/* Callers store zero here to inhibit the error message 153 for unrecognized options. */ 154 155int opterr = 1; 156 157/* Set to an option character which was unrecognized. 158 This must be initialized on some systems to avoid linking in the 159 system's own getopt implementation. */ 160 161int optopt = '?'; 162 163/* Describe how to deal with options that follow non-option ARGV-elements. 164 165 If the caller did not specify anything, 166 the default is REQUIRE_ORDER if the environment variable 167 POSIXLY_CORRECT is defined, PERMUTE otherwise. 168 169 REQUIRE_ORDER means don't recognize them as options; 170 stop option processing when the first non-option is seen. 171 This is what Unix does. 172 This mode of operation is selected by either setting the environment 173 variable POSIXLY_CORRECT, or using `+' as the first character 174 of the list of option characters. 175 176 PERMUTE is the default. We permute the contents of ARGV as we scan, 177 so that eventually all the non-options are at the end. This allows options 178 to be given in any order, even with programs that were not written to 179 expect this. 180 181 RETURN_IN_ORDER is an option available to programs that were written 182 to expect options and other ARGV-elements in any order and that care about 183 the ordering of the two. We describe each non-option ARGV-element 184 as if it were the argument of an option with character code 1. 185 Using `-' as the first character of the list of option characters 186 selects this mode of operation. 187 188 The special argument `--' forces an end of option-scanning regardless 189 of the value of `ordering'. In the case of RETURN_IN_ORDER, only 190 `--' can cause `getopt' to return -1 with `optind' != ARGC. */ 191 192static enum 193{ 194 REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER 195} ordering; 196 197/* Value of POSIXLY_CORRECT environment variable. */ 198static char *posixly_correct; 199 200#ifdef __GNU_LIBRARY__ 201/* We want to avoid inclusion of string.h with non-GNU libraries 202 because there are many ways it can cause trouble. 203 On some systems, it contains special magic macros that don't work 204 in GCC. */ 205# include <string.h> 206# define my_index strchr 207#else 208 209# if HAVE_STRING_H 210# include <string.h> 211# else 212# include <strings.h> 213# endif 214 215/* Avoid depending on library functions or files 216 whose names are inconsistent. */ 217 218#ifndef getenv 219extern char *getenv (); 220#endif 221 222static char * 223my_index (str, chr) 224 const char *str; 225 int chr; 226{ 227 while (*str) 228 { 229 if (*str == chr) 230 return (char *) str; 231 str++; 232 } 233 return 0; 234} 235 236/* If using GCC, we can safely declare strlen this way. 237 If not using GCC, it is ok not to declare it. */ 238#ifdef __GNUC__ 239/* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h. 240 That was relevant to code that was here before. */ 241# if (!defined __STDC__ || !__STDC__) && !defined strlen 242/* gcc with -traditional declares the built-in strlen to return int, 243 and has done so at least since version 2.4.5. -- rms. */ 244extern int strlen (const char *); 245# endif /* not __STDC__ */ 246#endif /* __GNUC__ */ 247 248#endif /* not __GNU_LIBRARY__ */ 249 250/* Handle permutation of arguments. */ 251 252/* Describe the part of ARGV that contains non-options that have 253 been skipped. `first_nonopt' is the index in ARGV of the first of them; 254 `last_nonopt' is the index after the last of them. */ 255 256static int first_nonopt; 257static int last_nonopt; 258 259#ifdef _LIBC 260/* Stored original parameters. 261 XXX This is no good solution. We should rather copy the args so 262 that we can compare them later. But we must not use malloc(3). */ 263extern int __libc_argc; 264extern char **__libc_argv; 265 266/* Bash 2.0 gives us an environment variable containing flags 267 indicating ARGV elements that should not be considered arguments. */ 268 269# ifdef USE_NONOPTION_FLAGS 270/* Defined in getopt_init.c */ 271extern char *__getopt_nonoption_flags; 272 273static int nonoption_flags_max_len; 274static int nonoption_flags_len; 275# endif 276 277# ifdef USE_NONOPTION_FLAGS 278# define SWAP_FLAGS(ch1, ch2) \ 279 if (nonoption_flags_len > 0) \ 280 { \ 281 char __tmp = __getopt_nonoption_flags[ch1]; \ 282 __getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2]; \ 283 __getopt_nonoption_flags[ch2] = __tmp; \ 284 } 285# else 286# define SWAP_FLAGS(ch1, ch2) 287# endif 288#else /* !_LIBC */ 289# define SWAP_FLAGS(ch1, ch2) 290#endif /* _LIBC */ 291 292/* Exchange two adjacent subsequences of ARGV. 293 One subsequence is elements [first_nonopt,last_nonopt) 294 which contains all the non-options that have been skipped so far. 295 The other is elements [last_nonopt,optind), which contains all 296 the options processed since those non-options were skipped. 297 298 `first_nonopt' and `last_nonopt' are relocated so that they describe 299 the new indices of the non-options in ARGV after they are moved. */ 300 301#if defined __STDC__ && __STDC__ 302static void exchange (char **); 303#endif 304 305static void 306exchange (argv) 307 char **argv; 308{ 309 int bottom = first_nonopt; 310 int middle = last_nonopt; 311 int top = optind; 312 char *tem; 313 314 /* Exchange the shorter segment with the far end of the longer segment. 315 That puts the shorter segment into the right place. 316 It leaves the longer segment in the right place overall, 317 but it consists of two parts that need to be swapped next. */ 318 319#if defined _LIBC && defined USE_NONOPTION_FLAGS 320 /* First make sure the handling of the `__getopt_nonoption_flags' 321 string can work normally. Our top argument must be in the range 322 of the string. */ 323 if (nonoption_flags_len > 0 && top >= nonoption_flags_max_len) 324 { 325 /* We must extend the array. The user plays games with us and 326 presents new arguments. */ 327 char *new_str = malloc (top + 1); 328 if (new_str == NULL) 329 nonoption_flags_len = nonoption_flags_max_len = 0; 330 else 331 { 332 memset (__mempcpy (new_str, __getopt_nonoption_flags, 333 nonoption_flags_max_len), 334 '\0', top + 1 - nonoption_flags_max_len); 335 nonoption_flags_max_len = top + 1; 336 __getopt_nonoption_flags = new_str; 337 } 338 } 339#endif 340 341 while (top > middle && middle > bottom) 342 { 343 if (top - middle > middle - bottom) 344 { 345 /* Bottom segment is the short one. */ 346 int len = middle - bottom; 347 register int i; 348 349 /* Swap it with the top part of the top segment. */ 350 for (i = 0; i < len; i++) 351 { 352 tem = argv[bottom + i]; 353 argv[bottom + i] = argv[top - (middle - bottom) + i]; 354 argv[top - (middle - bottom) + i] = tem; 355 SWAP_FLAGS (bottom + i, top - (middle - bottom) + i); 356 } 357 /* Exclude the moved bottom segment from further swapping. */ 358 top -= len; 359 } 360 else 361 { 362 /* Top segment is the short one. */ 363 int len = top - middle; 364 register int i; 365 366 /* Swap it with the bottom part of the bottom segment. */ 367 for (i = 0; i < len; i++) 368 { 369 tem = argv[bottom + i]; 370 argv[bottom + i] = argv[middle + i]; 371 argv[middle + i] = tem; 372 SWAP_FLAGS (bottom + i, middle + i); 373 } 374 /* Exclude the moved top segment from further swapping. */ 375 bottom += len; 376 } 377 } 378 379 /* Update records for the slots the non-options now occupy. */ 380 381 first_nonopt += (optind - last_nonopt); 382 last_nonopt = optind; 383} 384 385/* Initialize the internal data when the first call is made. */ 386 387#if defined __STDC__ && __STDC__ 388static const char *_getopt_initialize (int, char *const *, const char *); 389#endif 390static const char * 391_getopt_initialize (argc, argv, optstring) 392 int argc; 393 char *const *argv; 394 const char *optstring; 395{ 396 /* Start processing options with ARGV-element 1 (since ARGV-element 0 397 is the program name); the sequence of previously skipped 398 non-option ARGV-elements is empty. */ 399 400 first_nonopt = last_nonopt = optind; 401 402 nextchar = NULL; 403 404 posixly_correct = getenv ("POSIXLY_CORRECT"); 405 406 /* Determine how to handle the ordering of options and nonoptions. */ 407 408 if (optstring[0] == '-') 409 { 410 ordering = RETURN_IN_ORDER; 411 ++optstring; 412 } 413 else if (optstring[0] == '+') 414 { 415 ordering = REQUIRE_ORDER; 416 ++optstring; 417 } 418 else if (posixly_correct != NULL) 419 ordering = REQUIRE_ORDER; 420 else 421 ordering = PERMUTE; 422 423#if defined _LIBC && defined USE_NONOPTION_FLAGS 424 if (posixly_correct == NULL 425 && argc == __libc_argc && argv == __libc_argv) 426 { 427 if (nonoption_flags_max_len == 0) 428 { 429 if (__getopt_nonoption_flags == NULL 430 || __getopt_nonoption_flags[0] == '\0') 431 nonoption_flags_max_len = -1; 432 else 433 { 434 const char *orig_str = __getopt_nonoption_flags; 435 int len = nonoption_flags_max_len = strlen (orig_str); 436 if (nonoption_flags_max_len < argc) 437 nonoption_flags_max_len = argc; 438 __getopt_nonoption_flags = 439 (char *) malloc (nonoption_flags_max_len); 440 if (__getopt_nonoption_flags == NULL) 441 nonoption_flags_max_len = -1; 442 else 443 memset (__mempcpy (__getopt_nonoption_flags, orig_str, len), 444 '\0', nonoption_flags_max_len - len); 445 } 446 } 447 nonoption_flags_len = nonoption_flags_max_len; 448 } 449 else 450 nonoption_flags_len = 0; 451#endif 452 453 return optstring; 454} 455 456/* Scan elements of ARGV (whose length is ARGC) for option characters 457 given in OPTSTRING. 458 459 If an element of ARGV starts with '-', and is not exactly "-" or "--", 460 then it is an option element. The characters of this element 461 (aside from the initial '-') are option characters. If `getopt' 462 is called repeatedly, it returns successively each of the option characters 463 from each of the option elements. 464 465 If `getopt' finds another option character, it returns that character, 466 updating `optind' and `nextchar' so that the next call to `getopt' can 467 resume the scan with the following option character or ARGV-element. 468 469 If there are no more option characters, `getopt' returns -1. 470 Then `optind' is the index in ARGV of the first ARGV-element 471 that is not an option. (The ARGV-elements have been permuted 472 so that those that are not options now come last.) 473 474 OPTSTRING is a string containing the legitimate option characters. 475 If an option character is seen that is not listed in OPTSTRING, 476 return '?' after printing an error message. If you set `opterr' to 477 zero, the error message is suppressed but we still return '?'. 478 479 If a char in OPTSTRING is followed by a colon, that means it wants an arg, 480 so the following text in the same ARGV-element, or the text of the following 481 ARGV-element, is returned in `optarg'. Two colons mean an option that 482 wants an optional arg; if there is text in the current ARGV-element, 483 it is returned in `optarg', otherwise `optarg' is set to zero. 484 485 If OPTSTRING starts with `-' or `+', it requests different methods of 486 handling the non-option ARGV-elements. 487 See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above. 488 489 Long-named options begin with `--' instead of `-'. 490 Their names may be abbreviated as long as the abbreviation is unique 491 or is an exact match for some defined option. If they have an 492 argument, it follows the option name in the same ARGV-element, separated 493 from the option name by a `=', or else the in next ARGV-element. 494 When `getopt' finds a long-named option, it returns 0 if that option's 495 `flag' field is nonzero, the value of the option's `val' field 496 if the `flag' field is zero. 497 498 The elements of ARGV aren't really const, because we permute them. 499 But we pretend they're const in the prototype to be compatible 500 with other systems. 501 502 LONGOPTS is a vector of `struct option' terminated by an 503 element containing a name which is zero. 504 505 LONGIND returns the index in LONGOPT of the long-named option found. 506 It is only valid when a long-named option has been found by the most 507 recent call. 508 509 If LONG_ONLY is nonzero, '-' as well as '--' can introduce 510 long-named options. */ 511 512int 513_getopt_internal (argc, argv, optstring, longopts, longind, long_only) 514 int argc; 515 char *const *argv; 516 const char *optstring; 517 const struct option *longopts; 518 int *longind; 519 int long_only; 520{ 521 int print_errors = opterr; 522 if (optstring[0] == ':') 523 print_errors = 0; 524 525 if (argc < 1) 526 return -1; 527 528 optarg = NULL; 529 530 if (optind == 0 || !__getopt_initialized) 531 { 532 if (optind == 0) 533 optind = 1; /* Don't scan ARGV[0], the program name. */ 534 optstring = _getopt_initialize (argc, argv, optstring); 535 __getopt_initialized = 1; 536 } 537 538 /* Test whether ARGV[optind] points to a non-option argument. 539 Either it does not have option syntax, or there is an environment flag 540 from the shell indicating it is not an option. The later information 541 is only used when the used in the GNU libc. */ 542#if defined _LIBC && defined USE_NONOPTION_FLAGS 543# define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0' \ 544 || (optind < nonoption_flags_len \ 545 && __getopt_nonoption_flags[optind] == '1')) 546#else 547# define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0') 548#endif 549 550 if (nextchar == NULL || *nextchar == '\0') 551 { 552 /* Advance to the next ARGV-element. */ 553 554 /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been 555 moved back by the user (who may also have changed the arguments). */ 556 if (last_nonopt > optind) 557 last_nonopt = optind; 558 if (first_nonopt > optind) 559 first_nonopt = optind; 560 561 if (ordering == PERMUTE) 562 { 563 /* If we have just processed some options following some non-options, 564 exchange them so that the options come first. */ 565 566 if (first_nonopt != last_nonopt && last_nonopt != optind) 567 exchange ((char **) argv); 568 else if (last_nonopt != optind) 569 first_nonopt = optind; 570 571 /* Skip any additional non-options 572 and extend the range of non-options previously skipped. */ 573 574 while (optind < argc && NONOPTION_P) 575 optind++; 576 last_nonopt = optind; 577 } 578 579 /* The special ARGV-element `--' means premature end of options. 580 Skip it like a null option, 581 then exchange with previous non-options as if it were an option, 582 then skip everything else like a non-option. */ 583 584 if (optind != argc && !strcmp (argv[optind], "--")) 585 { 586 optind++; 587 588 if (first_nonopt != last_nonopt && last_nonopt != optind) 589 exchange ((char **) argv); 590 else if (first_nonopt == last_nonopt) 591 first_nonopt = optind; 592 last_nonopt = argc; 593 594 optind = argc; 595 } 596 597 /* If we have done all the ARGV-elements, stop the scan 598 and back over any non-options that we skipped and permuted. */ 599 600 if (optind == argc) 601 { 602 /* Set the next-arg-index to point at the non-options 603 that we previously skipped, so the caller will digest them. */ 604 if (first_nonopt != last_nonopt) 605 optind = first_nonopt; 606 return -1; 607 } 608 609 /* If we have come to a non-option and did not permute it, 610 either stop the scan or describe it to the caller and pass it by. */ 611 612 if (NONOPTION_P) 613 { 614 if (ordering == REQUIRE_ORDER) 615 return -1; 616 optarg = argv[optind++]; 617 return 1; 618 } 619 620 /* We have found another option-ARGV-element. 621 Skip the initial punctuation. */ 622 623 nextchar = (argv[optind] + 1 624 + (longopts != NULL && argv[optind][1] == '-')); 625 } 626 627 /* Decode the current option-ARGV-element. */ 628 629 /* Check whether the ARGV-element is a long option. 630 631 If long_only and the ARGV-element has the form "-f", where f is 632 a valid short option, don't consider it an abbreviated form of 633 a long option that starts with f. Otherwise there would be no 634 way to give the -f short option. 635 636 On the other hand, if there's a long option "fubar" and 637 the ARGV-element is "-fu", do consider that an abbreviation of 638 the long option, just like "--fu", and not "-f" with arg "u". 639 640 This distinction seems to be the most useful approach. */ 641 642 if (longopts != NULL 643 && (argv[optind][1] == '-' 644 || (long_only && (argv[optind][2] || !my_index (optstring, argv[optind][1]))))) 645 { 646 char *nameend; 647 const struct option *p; 648 const struct option *pfound = NULL; 649 int exact = 0; 650 int ambig = 0; 651 int indfound = -1; 652 int option_index; 653 654 for (nameend = nextchar; *nameend && *nameend != '='; nameend++) 655 /* Do nothing. */ ; 656 657 /* Test all long options for either exact match 658 or abbreviated matches. */ 659 for (p = longopts, option_index = 0; p->name; p++, option_index++) 660 if (!strncmp (p->name, nextchar, nameend - nextchar)) 661 { 662 if ((unsigned int) (nameend - nextchar) 663 == (unsigned int) strlen (p->name)) 664 { 665 /* Exact match found. */ 666 pfound = p; 667 indfound = option_index; 668 exact = 1; 669 break; 670 } 671 else if (pfound == NULL) 672 { 673 /* First nonexact match found. */ 674 pfound = p; 675 indfound = option_index; 676 } 677 else if (long_only 678 || pfound->has_arg != p->has_arg 679 || pfound->flag != p->flag 680 || pfound->val != p->val) 681 /* Second or later nonexact match found. */ 682 ambig = 1; 683 } 684 685 if (ambig && !exact) 686 { 687 if (print_errors) 688 { 689#if defined _LIBC && defined USE_IN_LIBIO 690 char *buf; 691 692 if (__asprintf (&buf, _("%s: option `%s' is ambiguous\n"), 693 argv[0], argv[optind]) >= 0) 694 { 695 696 if (_IO_fwide (stderr, 0) > 0) 697 __fwprintf (stderr, L"%s", buf); 698 else 699 fputs (buf, stderr); 700 701 free (buf); 702 } 703#else 704 fprintf (stderr, _("%s: option `%s' is ambiguous\n"), 705 argv[0], argv[optind]); 706#endif 707 } 708 nextchar += strlen (nextchar); 709 optind++; 710 optopt = 0; 711 return '?'; 712 } 713 714 if (pfound != NULL) 715 { 716 option_index = indfound; 717 optind++; 718 if (*nameend) 719 { 720 /* Don't test has_arg with >, because some C compilers don't 721 allow it to be used on enums. */ 722 if (pfound->has_arg) 723 optarg = nameend + 1; 724 else 725 { 726 if (print_errors) 727 { 728#if defined _LIBC && defined USE_IN_LIBIO 729 char *buf; 730 int n; 731#endif 732 733 if (argv[optind - 1][1] == '-') 734 { 735 /* --option */ 736#if defined _LIBC && defined USE_IN_LIBIO 737 n = __asprintf (&buf, _("\ 738%s: option `--%s' doesn't allow an argument\n"), 739 argv[0], pfound->name); 740#else 741 fprintf (stderr, _("\ 742%s: option `--%s' doesn't allow an argument\n"), 743 argv[0], pfound->name); 744#endif 745 } 746 else 747 { 748 /* +option or -option */ 749#if defined _LIBC && defined USE_IN_LIBIO 750 n = __asprintf (&buf, _("\ 751%s: option `%c%s' doesn't allow an argument\n"), 752 argv[0], argv[optind - 1][0], 753 pfound->name); 754#else 755 fprintf (stderr, _("\ 756%s: option `%c%s' doesn't allow an argument\n"), 757 argv[0], argv[optind - 1][0], pfound->name); 758#endif 759 } 760 761#if defined _LIBC && defined USE_IN_LIBIO 762 if (n >= 0) 763 { 764 if (_IO_fwide (stderr, 0) > 0) 765 __fwprintf (stderr, L"%s", buf); 766 else 767 fputs (buf, stderr); 768 769 free (buf); 770 } 771#endif 772 } 773 774 nextchar += strlen (nextchar); 775 776 optopt = pfound->val; 777 return '?'; 778 } 779 } 780 else if (pfound->has_arg == 1) 781 { 782 if (optind < argc) 783 optarg = argv[optind++]; 784 else 785 { 786 if (print_errors) 787 { 788#if defined _LIBC && defined USE_IN_LIBIO 789 char *buf; 790 791 if (__asprintf (&buf, _("\ 792%s: option `%s' requires an argument\n"), 793 argv[0], argv[optind - 1]) >= 0) 794 { 795 if (_IO_fwide (stderr, 0) > 0) 796 __fwprintf (stderr, L"%s", buf); 797 else 798 fputs (buf, stderr); 799 800 free (buf); 801 } 802#else 803 fprintf (stderr, 804 _("%s: option `%s' requires an argument\n"), 805 argv[0], argv[optind - 1]); 806#endif 807 } 808 nextchar += strlen (nextchar); 809 optopt = pfound->val; 810 return optstring[0] == ':' ? ':' : '?'; 811 } 812 } 813 nextchar += strlen (nextchar); 814 if (longind != NULL) 815 *longind = option_index; 816 if (pfound->flag) 817 { 818 *(pfound->flag) = pfound->val; 819 return 0; 820 } 821 return pfound->val; 822 } 823 824 /* Can't find it as a long option. If this is not getopt_long_only, 825 or the option starts with '--' or is not a valid short 826 option, then it's an error. 827 Otherwise interpret it as a short option. */ 828 if (!long_only || argv[optind][1] == '-' 829 || my_index (optstring, *nextchar) == NULL) 830 { 831 if (print_errors) 832 { 833#if defined _LIBC && defined USE_IN_LIBIO 834 char *buf; 835 int n; 836#endif 837 838 if (argv[optind][1] == '-') 839 { 840 /* --option */ 841#if defined _LIBC && defined USE_IN_LIBIO 842 n = __asprintf (&buf, _("%s: unrecognized option `--%s'\n"), 843 argv[0], nextchar); 844#else 845 fprintf (stderr, _("%s: unrecognized option `--%s'\n"), 846 argv[0], nextchar); 847#endif 848 } 849 else 850 { 851 /* +option or -option */ 852#if defined _LIBC && defined USE_IN_LIBIO 853 n = __asprintf (&buf, _("%s: unrecognized option `%c%s'\n"), 854 argv[0], argv[optind][0], nextchar); 855#else 856 fprintf (stderr, _("%s: unrecognized option `%c%s'\n"), 857 argv[0], argv[optind][0], nextchar); 858#endif 859 } 860 861#if defined _LIBC && defined USE_IN_LIBIO 862 if (n >= 0) 863 { 864 if (_IO_fwide (stderr, 0) > 0) 865 __fwprintf (stderr, L"%s", buf); 866 else 867 fputs (buf, stderr); 868 869 free (buf); 870 } 871#endif 872 } 873 nextchar = (char *) ""; 874 optind++; 875 optopt = 0; 876 return '?'; 877 } 878 } 879 880 /* Look at and handle the next short option-character. */ 881 882 { 883 char c = *nextchar++; 884 char *temp = my_index (optstring, c); 885 886 /* Increment `optind' when we start to process its last character. */ 887 if (*nextchar == '\0') 888 ++optind; 889 890 if (temp == NULL || c == ':') 891 { 892 if (print_errors) 893 { 894#if defined _LIBC && defined USE_IN_LIBIO 895 char *buf; 896 int n; 897#endif 898 899 if (posixly_correct) 900 { 901 /* 1003.2 specifies the format of this message. */ 902#if defined _LIBC && defined USE_IN_LIBIO 903 n = __asprintf (&buf, _("%s: illegal option -- %c\n"), 904 argv[0], c); 905#else 906 fprintf (stderr, _("%s: illegal option -- %c\n"), argv[0], c); 907#endif 908 } 909 else 910 { 911#if defined _LIBC && defined USE_IN_LIBIO 912 n = __asprintf (&buf, _("%s: invalid option -- %c\n"), 913 argv[0], c); 914#else 915 fprintf (stderr, _("%s: invalid option -- %c\n"), argv[0], c); 916#endif 917 } 918 919#if defined _LIBC && defined USE_IN_LIBIO 920 if (n >= 0) 921 { 922 if (_IO_fwide (stderr, 0) > 0) 923 __fwprintf (stderr, L"%s", buf); 924 else 925 fputs (buf, stderr); 926 927 free (buf); 928 } 929#endif 930 } 931 optopt = c; 932 return '?'; 933 } 934 /* Convenience. Treat POSIX -W foo same as long option --foo */ 935 if (temp[0] == 'W' && temp[1] == ';') 936 { 937 char *nameend; 938 const struct option *p; 939 const struct option *pfound = NULL; 940 int exact = 0; 941 int ambig = 0; 942 int indfound = 0; 943 int option_index; 944 945 /* This is an option that requires an argument. */ 946 if (*nextchar != '\0') 947 { 948 optarg = nextchar; 949 /* If we end this ARGV-element by taking the rest as an arg, 950 we must advance to the next element now. */ 951 optind++; 952 } 953 else if (optind == argc) 954 { 955 if (print_errors) 956 { 957 /* 1003.2 specifies the format of this message. */ 958#if defined _LIBC && defined USE_IN_LIBIO 959 char *buf; 960 961 if (__asprintf (&buf, 962 _("%s: option requires an argument -- %c\n"), 963 argv[0], c) >= 0) 964 { 965 if (_IO_fwide (stderr, 0) > 0) 966 __fwprintf (stderr, L"%s", buf); 967 else 968 fputs (buf, stderr); 969 970 free (buf); 971 } 972#else 973 fprintf (stderr, _("%s: option requires an argument -- %c\n"), 974 argv[0], c); 975#endif 976 } 977 optopt = c; 978 if (optstring[0] == ':') 979 c = ':'; 980 else 981 c = '?'; 982 return c; 983 } 984 else 985 /* We already incremented `optind' once; 986 increment it again when taking next ARGV-elt as argument. */ 987 optarg = argv[optind++]; 988 989 /* optarg is now the argument, see if it's in the 990 table of longopts. */ 991 992 for (nextchar = nameend = optarg; *nameend && *nameend != '='; nameend++) 993 /* Do nothing. */ ; 994 995 /* Test all long options for either exact match 996 or abbreviated matches. */ 997 for (p = longopts, option_index = 0; p->name; p++, option_index++) 998 if (!strncmp (p->name, nextchar, nameend - nextchar)) 999 { 1000 if ((unsigned int) (nameend - nextchar) == strlen (p->name)) 1001 { 1002 /* Exact match found. */ 1003 pfound = p; 1004 indfound = option_index; 1005 exact = 1; 1006 break; 1007 } 1008 else if (pfound == NULL) 1009 { 1010 /* First nonexact match found. */ 1011 pfound = p; 1012 indfound = option_index; 1013 } 1014 else 1015 /* Second or later nonexact match found. */ 1016 ambig = 1; 1017 } 1018 if (ambig && !exact) 1019 { 1020 if (print_errors) 1021 { 1022#if defined _LIBC && defined USE_IN_LIBIO 1023 char *buf; 1024 1025 if (__asprintf (&buf, _("%s: option `-W %s' is ambiguous\n"), 1026 argv[0], argv[optind]) >= 0) 1027 { 1028 if (_IO_fwide (stderr, 0) > 0) 1029 __fwprintf (stderr, L"%s", buf); 1030 else 1031 fputs (buf, stderr); 1032 1033 free (buf); 1034 } 1035#else 1036 fprintf (stderr, _("%s: option `-W %s' is ambiguous\n"), 1037 argv[0], argv[optind]); 1038#endif 1039 } 1040 nextchar += strlen (nextchar); 1041 optind++; 1042 return '?'; 1043 } 1044 if (pfound != NULL) 1045 { 1046 option_index = indfound; 1047 if (*nameend) 1048 { 1049 /* Don't test has_arg with >, because some C compilers don't 1050 allow it to be used on enums. */ 1051 if (pfound->has_arg) 1052 optarg = nameend + 1; 1053 else 1054 { 1055 if (print_errors) 1056 { 1057#if defined _LIBC && defined USE_IN_LIBIO 1058 char *buf; 1059 1060 if (__asprintf (&buf, _("\ 1061%s: option `-W %s' doesn't allow an argument\n"), 1062 argv[0], pfound->name) >= 0) 1063 { 1064 if (_IO_fwide (stderr, 0) > 0) 1065 __fwprintf (stderr, L"%s", buf); 1066 else 1067 fputs (buf, stderr); 1068 1069 free (buf); 1070 } 1071#else 1072 fprintf (stderr, _("\ 1073%s: option `-W %s' doesn't allow an argument\n"), 1074 argv[0], pfound->name); 1075#endif 1076 } 1077 1078 nextchar += strlen (nextchar); 1079 return '?'; 1080 } 1081 } 1082 else if (pfound->has_arg == 1) 1083 { 1084 if (optind < argc) 1085 optarg = argv[optind++]; 1086 else 1087 { 1088 if (print_errors) 1089 { 1090#if defined _LIBC && defined USE_IN_LIBIO 1091 char *buf; 1092 1093 if (__asprintf (&buf, _("\ 1094%s: option `%s' requires an argument\n"), 1095 argv[0], argv[optind - 1]) >= 0) 1096 { 1097 if (_IO_fwide (stderr, 0) > 0) 1098 __fwprintf (stderr, L"%s", buf); 1099 else 1100 fputs (buf, stderr); 1101 1102 free (buf); 1103 } 1104#else 1105 fprintf (stderr, 1106 _("%s: option `%s' requires an argument\n"), 1107 argv[0], argv[optind - 1]); 1108#endif 1109 } 1110 nextchar += strlen (nextchar); 1111 return optstring[0] == ':' ? ':' : '?'; 1112 } 1113 } 1114 nextchar += strlen (nextchar); 1115 if (longind != NULL) 1116 *longind = option_index; 1117 if (pfound->flag) 1118 { 1119 *(pfound->flag) = pfound->val; 1120 return 0; 1121 } 1122 return pfound->val; 1123 } 1124 nextchar = NULL; 1125 return 'W'; /* Let the application handle it. */ 1126 } 1127 if (temp[1] == ':') 1128 { 1129 if (temp[2] == ':') 1130 { 1131 /* This is an option that accepts an argument optionally. */ 1132 if (*nextchar != '\0') 1133 { 1134 optarg = nextchar; 1135 optind++; 1136 } 1137 else 1138 optarg = NULL; 1139 nextchar = NULL; 1140 } 1141 else 1142 { 1143 /* This is an option that requires an argument. */ 1144 if (*nextchar != '\0') 1145 { 1146 optarg = nextchar; 1147 /* If we end this ARGV-element by taking the rest as an arg, 1148 we must advance to the next element now. */ 1149 optind++; 1150 } 1151 else if (optind == argc) 1152 { 1153 if (print_errors) 1154 { 1155 /* 1003.2 specifies the format of this message. */ 1156#if defined _LIBC && defined USE_IN_LIBIO 1157 char *buf; 1158 1159 if (__asprintf (&buf, _("\ 1160%s: option requires an argument -- %c\n"), 1161 argv[0], c) >= 0) 1162 { 1163 if (_IO_fwide (stderr, 0) > 0) 1164 __fwprintf (stderr, L"%s", buf); 1165 else 1166 fputs (buf, stderr); 1167 1168 free (buf); 1169 } 1170#else 1171 fprintf (stderr, 1172 _("%s: option requires an argument -- %c\n"), 1173 argv[0], c); 1174#endif 1175 } 1176 optopt = c; 1177 if (optstring[0] == ':') 1178 c = ':'; 1179 else 1180 c = '?'; 1181 } 1182 else 1183 /* We already incremented `optind' once; 1184 increment it again when taking next ARGV-elt as argument. */ 1185 optarg = argv[optind++]; 1186 nextchar = NULL; 1187 } 1188 } 1189 return c; 1190 } 1191} 1192 1193int 1194getopt (argc, argv, optstring) 1195 int argc; 1196 char *const *argv; 1197 const char *optstring; 1198{ 1199 return _getopt_internal (argc, argv, optstring, 1200 (const struct option *) 0, 1201 (int *) 0, 1202 0); 1203} 1204 1205#endif /* Not ELIDE_CODE. */ 1206 1207#ifdef TEST 1208 1209/* Compile with -DTEST to make an executable for use in testing 1210 the above definition of `getopt'. */ 1211 1212int 1213main (argc, argv) 1214 int argc; 1215 char **argv; 1216{ 1217 int c; 1218 int digit_optind = 0; 1219 1220 while (1) 1221 { 1222 int this_option_optind = optind ? optind : 1; 1223 1224 c = getopt (argc, argv, "abc:d:0123456789"); 1225 if (c == -1) 1226 break; 1227 1228 switch (c) 1229 { 1230 case '0': 1231 case '1': 1232 case '2': 1233 case '3': 1234 case '4': 1235 case '5': 1236 case '6': 1237 case '7': 1238 case '8': 1239 case '9': 1240 if (digit_optind != 0 && digit_optind != this_option_optind) 1241 printf ("digits occur in two different argv-elements.\n"); 1242 digit_optind = this_option_optind; 1243 printf ("option %c\n", c); 1244 break; 1245 1246 case 'a': 1247 printf ("option a\n"); 1248 break; 1249 1250 case 'b': 1251 printf ("option b\n"); 1252 break; 1253 1254 case 'c': 1255 printf ("option c with value `%s'\n", optarg); 1256 break; 1257 1258 case '?': 1259 break; 1260 1261 default: 1262 printf ("?? getopt returned character code 0%o ??\n", c); 1263 } 1264 } 1265 1266 if (optind < argc) 1267 { 1268 printf ("non-option ARGV-elements: "); 1269 while (optind < argc) 1270 printf ("%s ", argv[optind++]); 1271 printf ("\n"); 1272 } 1273 1274 exit (0); 1275} 1276 1277#endif /* TEST */ 1278