1/* 2 NOTE: 3 I cannot get the vanilla getopt code to work (i.e. compile only what 4 is needed and not duplicate symbols found in the standard library) 5 on all the platforms that FLAC supports. In particular the gating 6 of code with the ELIDE_CODE #define is not accurate enough on systems 7 that are POSIX but not glibc. If someone has a patch that works on 8 GNU/Linux, Darwin, AND Solaris please submit it on the project page: 9 http://sourceforge.net/projects/flac 10 11 In the meantime I have munged the global symbols and removed gates 12 around code, while at the same time trying to touch the original as 13 little as possible. 14*/ 15/* Getopt for GNU. 16 NOTE: getopt is now part of the C library, so if you don't know what 17 "Keep this file name-space clean" means, talk to drepper@gnu.org 18 before changing it! 19 20 Copyright (C) 1987, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99 21 Free Software Foundation, Inc. 22 23 The GNU C Library is free software; you can redistribute it and/or 24 modify it under the terms of the GNU Library General Public License as 25 published by the Free Software Foundation; either version 2 of the 26 License, or (at your option) any later version. 27 28 The GNU C Library is distributed in the hope that it will be useful, 29 but WITHOUT ANY WARRANTY; without even the implied warranty of 30 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 31 Library General Public License for more details. 32 33 You should have received a copy of the GNU Library General Public 34 License along with the GNU C Library; see the file COPYING.LIB. If not, 35 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, 36 Boston, MA 02111-1307, USA. */ 37 38/* This tells Alpha OSF/1 not to define a getopt prototype in <stdio.h>. 39 Ditto for AIX 3.2 and <stdlib.h>. */ 40#ifndef _NO_PROTO 41# define _NO_PROTO 42#endif 43 44#if HAVE_CONFIG_H 45# include <config.h> 46#endif 47 48#if !defined __STDC__ || !__STDC__ 49/* This is a separate conditional since some stdc systems 50 reject `defined (const)'. */ 51# ifndef const 52# define const 53# endif 54#endif 55 56#include <stdio.h> 57 58/* Comment out all this code if we are using the GNU C Library, and are not 59 actually compiling the library itself. This code is part of the GNU C 60 Library, but also included in many other GNU distributions. Compiling 61 and linking in this code is a waste when using the GNU C library 62 (especially if it is a shared library). Rather than having every GNU 63 program understand `configure --with-gnu-libc' and omit the object files, 64 it is simpler to just do this in the source for each such file. */ 65 66#define GETOPT_INTERFACE_VERSION 2 67#if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2 68# include <gnu-versions.h> 69# if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION 70# define ELIDE_CODE 71# endif 72#endif 73 74#if 1 75/*[JEC] was:#ifndef ELIDE_CODE*/ 76 77 78/* This needs to come after some library #include 79 to get __GNU_LIBRARY__ defined. */ 80#ifdef __GNU_LIBRARY__ 81/* Don't include stdlib.h for non-GNU C libraries because some of them 82 contain conflicting prototypes for getopt. */ 83# include <stdlib.h> 84# include <unistd.h> 85#endif /* GNU C library. */ 86 87#ifdef VMS 88# include <unixlib.h> 89# if HAVE_STRING_H - 0 90# include <string.h> 91# endif 92#endif 93 94#ifndef _ 95/* This is for other GNU distributions with internationalized messages. 96 When compiling libc, the _ macro is predefined. */ 97# ifdef HAVE_LIBINTL_H 98# include <libintl.h> 99# define _(msgid) gettext (msgid) 100# else 101# define _(msgid) (msgid) 102# endif 103#endif 104 105/* This version of `share__getopt' appears to the caller like standard Unix `getopt' 106 but it behaves differently for the user, since it allows the user 107 to intersperse the options with the other arguments. 108 109 As `share__getopt' works, it permutes the elements of ARGV so that, 110 when it is done, all the options precede everything else. Thus 111 all application programs are extended to handle flexible argument order. 112 113 Setting the environment variable POSIXLY_CORRECT disables permutation. 114 Then the behavior is completely standard. 115 116 GNU application programs can use a third alternative mode in which 117 they can distinguish the relative order of options and other arguments. */ 118 119#include "share/getopt.h" 120/*[JEC] was:#include "getopt.h"*/ 121 122/* For communication from `share__getopt' to the caller. 123 When `share__getopt' finds an option that takes an argument, 124 the argument value is returned here. 125 Also, when `ordering' is RETURN_IN_ORDER, 126 each non-option ARGV-element is returned here. */ 127 128char *share__optarg = 0; /*[JEC] initialize to avoid being a 'Common' symbol */ 129 130/* Index in ARGV of the next element to be scanned. 131 This is used for communication to and from the caller 132 and for communication between successive calls to `share__getopt'. 133 134 On entry to `share__getopt', zero means this is the first call; initialize. 135 136 When `share__getopt' returns -1, this is the index of the first of the 137 non-option elements that the caller should itself scan. 138 139 Otherwise, `share__optind' communicates from one call to the next 140 how much of ARGV has been scanned so far. */ 141 142/* 1003.2 says this must be 1 before any call. */ 143int share__optind = 1; 144 145/* Formerly, initialization of getopt depended on share__optind==0, which 146 causes problems with re-calling getopt as programs generally don't 147 know that. */ 148 149static int share____getopt_initialized = 0; 150 151/* The next char to be scanned in the option-element 152 in which the last option character we returned was found. 153 This allows us to pick up the scan where we left off. 154 155 If this is zero, or a null string, it means resume the scan 156 by advancing to the next ARGV-element. */ 157 158static char *nextchar; 159 160/* Callers store zero here to inhibit the error message 161 for unrecognized options. */ 162 163int share__opterr = 1; 164 165/* Set to an option character which was unrecognized. 166 This must be initialized on some systems to avoid linking in the 167 system's own getopt implementation. */ 168 169int share__optopt = '?'; 170 171/* Describe how to deal with options that follow non-option ARGV-elements. 172 173 If the caller did not specify anything, 174 the default is REQUIRE_ORDER if the environment variable 175 POSIXLY_CORRECT is defined, PERMUTE otherwise. 176 177 REQUIRE_ORDER means don't recognize them as options; 178 stop option processing when the first non-option is seen. 179 This is what Unix does. 180 This mode of operation is selected by either setting the environment 181 variable POSIXLY_CORRECT, or using `+' as the first character 182 of the list of option characters. 183 184 PERMUTE is the default. We permute the contents of ARGV as we scan, 185 so that eventually all the non-options are at the end. This allows options 186 to be given in any order, even with programs that were not written to 187 expect this. 188 189 RETURN_IN_ORDER is an option available to programs that were written 190 to expect options and other ARGV-elements in any order and that care about 191 the ordering of the two. We describe each non-option ARGV-element 192 as if it were the argument of an option with character code 1. 193 Using `-' as the first character of the list of option characters 194 selects this mode of operation. 195 196 The special argument `--' forces an end of option-scanning regardless 197 of the value of `ordering'. In the case of RETURN_IN_ORDER, only 198 `--' can cause `share__getopt' to return -1 with `share__optind' != ARGC. */ 199 200static enum 201{ 202 REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER 203} ordering; 204 205/* Value of POSIXLY_CORRECT environment variable. */ 206static char *posixly_correct; 207 208#ifdef __GNU_LIBRARY__ 209/* We want to avoid inclusion of string.h with non-GNU libraries 210 because there are many ways it can cause trouble. 211 On some systems, it contains special magic macros that don't work 212 in GCC. */ 213# include <string.h> 214# define my_index strchr 215#else 216 217#include <string.h> 218 219/* Avoid depending on library functions or files 220 whose names are inconsistent. */ 221 222#ifndef getenv 223extern char *getenv (); 224#endif 225 226static char * 227my_index (str, chr) 228 const char *str; 229 int chr; 230{ 231 while (*str) 232 { 233 if (*str == chr) 234 return (char *) str; 235 str++; 236 } 237 return 0; 238} 239 240/* If using GCC, we can safely declare strlen this way. 241 If not using GCC, it is ok not to declare it. */ 242#ifdef __GNUC__ 243/* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h. 244 That was relevant to code that was here before. */ 245# if (!defined __STDC__ || !__STDC__) && !defined strlen 246/* gcc with -traditional declares the built-in strlen to return int, 247 and has done so at least since version 2.4.5. -- rms. */ 248extern int strlen (const char *); 249# endif /* not __STDC__ */ 250#endif /* __GNUC__ */ 251 252#endif /* not __GNU_LIBRARY__ */ 253 254/* Handle permutation of arguments. */ 255 256/* Describe the part of ARGV that contains non-options that have 257 been skipped. `first_nonopt' is the index in ARGV of the first of them; 258 `last_nonopt' is the index after the last of them. */ 259 260static int first_nonopt; 261static int last_nonopt; 262 263#ifdef _LIBC 264/* Bash 2.0 gives us an environment variable containing flags 265 indicating ARGV elements that should not be considered arguments. */ 266 267/* Defined in getopt_init.c */ 268extern char *__getopt_nonoption_flags; 269 270static int nonoption_flags_max_len; 271static int nonoption_flags_len; 272 273static int original_argc; 274static char *const *original_argv; 275 276/* Make sure the environment variable bash 2.0 puts in the environment 277 is valid for the getopt call we must make sure that the ARGV passed 278 to getopt is that one passed to the process. */ 279static void 280__attribute__ ((unused)) 281store_args_and_env (int argc, char *const *argv) 282{ 283 /* XXX This is no good solution. We should rather copy the args so 284 that we can compare them later. But we must not use malloc(3). */ 285 original_argc = argc; 286 original_argv = argv; 287} 288# ifdef text_set_element 289text_set_element (__libc_subinit, store_args_and_env); 290# endif /* text_set_element */ 291 292# define SWAP_FLAGS(ch1, ch2) \ 293 if (nonoption_flags_len > 0) \ 294 { \ 295 char __tmp = __getopt_nonoption_flags[ch1]; \ 296 __getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2]; \ 297 __getopt_nonoption_flags[ch2] = __tmp; \ 298 } 299#else /* !_LIBC */ 300# define SWAP_FLAGS(ch1, ch2) 301#endif /* _LIBC */ 302 303/* Exchange two adjacent subsequences of ARGV. 304 One subsequence is elements [first_nonopt,last_nonopt) 305 which contains all the non-options that have been skipped so far. 306 The other is elements [last_nonopt,share__optind), which contains all 307 the options processed since those non-options were skipped. 308 309 `first_nonopt' and `last_nonopt' are relocated so that they describe 310 the new indices of the non-options in ARGV after they are moved. */ 311 312#if defined __STDC__ && __STDC__ 313static void exchange (char **); 314#endif 315 316static void 317exchange (argv) 318 char **argv; 319{ 320 int bottom = first_nonopt; 321 int middle = last_nonopt; 322 int top = share__optind; 323 char *tem; 324 325 /* Exchange the shorter segment with the far end of the longer segment. 326 That puts the shorter segment into the right place. 327 It leaves the longer segment in the right place overall, 328 but it consists of two parts that need to be swapped next. */ 329 330#ifdef _LIBC 331 /* First make sure the handling of the `__getopt_nonoption_flags' 332 string can work normally. Our top argument must be in the range 333 of the string. */ 334 if (nonoption_flags_len > 0 && top >= nonoption_flags_max_len) 335 { 336 /* We must extend the array. The user plays games with us and 337 presents new arguments. */ 338 char *new_str = malloc (top + 1); 339 if (new_str == NULL) 340 nonoption_flags_len = nonoption_flags_max_len = 0; 341 else 342 { 343 memset (__mempcpy (new_str, __getopt_nonoption_flags, 344 nonoption_flags_max_len), 345 '\0', top + 1 - nonoption_flags_max_len); 346 nonoption_flags_max_len = top + 1; 347 __getopt_nonoption_flags = new_str; 348 } 349 } 350#endif 351 352 while (top > middle && middle > bottom) 353 { 354 if (top - middle > middle - bottom) 355 { 356 /* Bottom segment is the short one. */ 357 int len = middle - bottom; 358 register int i; 359 360 /* Swap it with the top part of the top segment. */ 361 for (i = 0; i < len; i++) 362 { 363 tem = argv[bottom + i]; 364 argv[bottom + i] = argv[top - (middle - bottom) + i]; 365 argv[top - (middle - bottom) + i] = tem; 366 SWAP_FLAGS (bottom + i, top - (middle - bottom) + i); 367 } 368 /* Exclude the moved bottom segment from further swapping. */ 369 top -= len; 370 } 371 else 372 { 373 /* Top segment is the short one. */ 374 int len = top - middle; 375 register int i; 376 377 /* Swap it with the bottom part of the bottom segment. */ 378 for (i = 0; i < len; i++) 379 { 380 tem = argv[bottom + i]; 381 argv[bottom + i] = argv[middle + i]; 382 argv[middle + i] = tem; 383 SWAP_FLAGS (bottom + i, middle + i); 384 } 385 /* Exclude the moved top segment from further swapping. */ 386 bottom += len; 387 } 388 } 389 390 /* Update records for the slots the non-options now occupy. */ 391 392 first_nonopt += (share__optind - last_nonopt); 393 last_nonopt = share__optind; 394} 395 396/* Initialize the internal data when the first call is made. */ 397 398#if defined __STDC__ && __STDC__ 399static const char *share___getopt_initialize (int, char *const *, const char *); 400#endif 401static const char * 402share___getopt_initialize (argc, argv, optstring) 403 int argc; 404 char *const *argv; 405 const char *optstring; 406{ 407 /* Start processing options with ARGV-element 1 (since ARGV-element 0 408 is the program name); the sequence of previously skipped 409 non-option ARGV-elements is empty. */ 410 411 first_nonopt = last_nonopt = share__optind; 412 413 nextchar = NULL; 414 415 posixly_correct = getenv ("POSIXLY_CORRECT"); 416 417 /* Determine how to handle the ordering of options and nonoptions. */ 418 419 if (optstring[0] == '-') 420 { 421 ordering = RETURN_IN_ORDER; 422 ++optstring; 423 } 424 else if (optstring[0] == '+') 425 { 426 ordering = REQUIRE_ORDER; 427 ++optstring; 428 } 429 else if (posixly_correct != NULL) 430 ordering = REQUIRE_ORDER; 431 else 432 ordering = PERMUTE; 433 434#ifdef _LIBC 435 if (posixly_correct == NULL 436 && argc == original_argc && argv == original_argv) 437 { 438 if (nonoption_flags_max_len == 0) 439 { 440 if (__getopt_nonoption_flags == NULL 441 || __getopt_nonoption_flags[0] == '\0') 442 nonoption_flags_max_len = -1; 443 else 444 { 445 const char *orig_str = __getopt_nonoption_flags; 446 int len = nonoption_flags_max_len = strlen (orig_str); 447 if (nonoption_flags_max_len < argc) 448 nonoption_flags_max_len = argc; 449 __getopt_nonoption_flags = 450 (char *) malloc (nonoption_flags_max_len); 451 if (__getopt_nonoption_flags == NULL) 452 nonoption_flags_max_len = -1; 453 else 454 memset (__mempcpy (__getopt_nonoption_flags, orig_str, len), 455 '\0', nonoption_flags_max_len - len); 456 } 457 } 458 nonoption_flags_len = nonoption_flags_max_len; 459 } 460 else 461 nonoption_flags_len = 0; 462#else 463 (void)argc, (void)argv; 464#endif 465 466 return optstring; 467} 468 469/* Scan elements of ARGV (whose length is ARGC) for option characters 470 given in OPTSTRING. 471 472 If an element of ARGV starts with '-', and is not exactly "-" or "--", 473 then it is an option element. The characters of this element 474 (aside from the initial '-') are option characters. If `share__getopt' 475 is called repeatedly, it returns successively each of the option characters 476 from each of the option elements. 477 478 If `share__getopt' finds another option character, it returns that character, 479 updating `share__optind' and `nextchar' so that the next call to `share__getopt' can 480 resume the scan with the following option character or ARGV-element. 481 482 If there are no more option characters, `share__getopt' returns -1. 483 Then `share__optind' is the index in ARGV of the first ARGV-element 484 that is not an option. (The ARGV-elements have been permuted 485 so that those that are not options now come last.) 486 487 OPTSTRING is a string containing the legitimate option characters. 488 If an option character is seen that is not listed in OPTSTRING, 489 return '?' after printing an error message. If you set `share__opterr' to 490 zero, the error message is suppressed but we still return '?'. 491 492 If a char in OPTSTRING is followed by a colon, that means it wants an arg, 493 so the following text in the same ARGV-element, or the text of the following 494 ARGV-element, is returned in `share__optarg'. Two colons mean an option that 495 wants an optional arg; if there is text in the current ARGV-element, 496 it is returned in `share__optarg', otherwise `share__optarg' is set to zero. 497 498 If OPTSTRING starts with `-' or `+', it requests different methods of 499 handling the non-option ARGV-elements. 500 See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above. 501 502 Long-named options begin with `--' instead of `-'. 503 Their names may be abbreviated as long as the abbreviation is unique 504 or is an exact match for some defined option. If they have an 505 argument, it follows the option name in the same ARGV-element, separated 506 from the option name by a `=', or else the in next ARGV-element. 507 When `share__getopt' finds a long-named option, it returns 0 if that option's 508 `flag' field is nonzero, the value of the option's `val' field 509 if the `flag' field is zero. 510 511 The elements of ARGV aren't really const, because we permute them. 512 But we pretend they're const in the prototype to be compatible 513 with other systems. 514 515 LONGOPTS is a vector of `struct share__option' terminated by an 516 element containing a name which is zero. 517 518 LONGIND returns the index in LONGOPT of the long-named option found. 519 It is only valid when a long-named option has been found by the most 520 recent call. 521 522 If LONG_ONLY is nonzero, '-' as well as '--' can introduce 523 long-named options. */ 524 525int 526share___getopt_internal (argc, argv, optstring, longopts, longind, long_only) 527 int argc; 528 char *const *argv; 529 const char *optstring; 530 const struct share__option *longopts; 531 int *longind; 532 int long_only; 533{ 534 share__optarg = NULL; 535 536 if (share__optind == 0 || !share____getopt_initialized) 537 { 538 if (share__optind == 0) 539 share__optind = 1; /* Don't scan ARGV[0], the program name. */ 540 optstring = share___getopt_initialize (argc, argv, optstring); 541 share____getopt_initialized = 1; 542 } 543 544 /* Test whether ARGV[share__optind] points to a non-option argument. 545 Either it does not have option syntax, or there is an environment flag 546 from the shell indicating it is not an option. The later information 547 is only used when the used in the GNU libc. */ 548#ifdef _LIBC 549# define NONOPTION_P (argv[share__optind][0] != '-' || argv[share__optind][1] == '\0' \ 550 || (share__optind < nonoption_flags_len \ 551 && __getopt_nonoption_flags[share__optind] == '1')) 552#else 553# define NONOPTION_P (argv[share__optind][0] != '-' || argv[share__optind][1] == '\0') 554#endif 555 556 if (nextchar == NULL || *nextchar == '\0') 557 { 558 /* Advance to the next ARGV-element. */ 559 560 /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been 561 moved back by the user (who may also have changed the arguments). */ 562 if (last_nonopt > share__optind) 563 last_nonopt = share__optind; 564 if (first_nonopt > share__optind) 565 first_nonopt = share__optind; 566 567 if (ordering == PERMUTE) 568 { 569 /* If we have just processed some options following some non-options, 570 exchange them so that the options come first. */ 571 572 if (first_nonopt != last_nonopt && last_nonopt != share__optind) 573 exchange ((char **) argv); 574 else if (last_nonopt != share__optind) 575 first_nonopt = share__optind; 576 577 /* Skip any additional non-options 578 and extend the range of non-options previously skipped. */ 579 580 while (share__optind < argc && NONOPTION_P) 581 share__optind++; 582 last_nonopt = share__optind; 583 } 584 585 /* The special ARGV-element `--' means premature end of options. 586 Skip it like a null option, 587 then exchange with previous non-options as if it were an option, 588 then skip everything else like a non-option. */ 589 590 if (share__optind != argc && !strcmp (argv[share__optind], "--")) 591 { 592 share__optind++; 593 594 if (first_nonopt != last_nonopt && last_nonopt != share__optind) 595 exchange ((char **) argv); 596 else if (first_nonopt == last_nonopt) 597 first_nonopt = share__optind; 598 last_nonopt = argc; 599 600 share__optind = argc; 601 } 602 603 /* If we have done all the ARGV-elements, stop the scan 604 and back over any non-options that we skipped and permuted. */ 605 606 if (share__optind == argc) 607 { 608 /* Set the next-arg-index to point at the non-options 609 that we previously skipped, so the caller will digest them. */ 610 if (first_nonopt != last_nonopt) 611 share__optind = first_nonopt; 612 return -1; 613 } 614 615 /* If we have come to a non-option and did not permute it, 616 either stop the scan or describe it to the caller and pass it by. */ 617 618 if (NONOPTION_P) 619 { 620 if (ordering == REQUIRE_ORDER) 621 return -1; 622 share__optarg = argv[share__optind++]; 623 return 1; 624 } 625 626 /* We have found another option-ARGV-element. 627 Skip the initial punctuation. */ 628 629 nextchar = (argv[share__optind] + 1 630 + (longopts != NULL && argv[share__optind][1] == '-')); 631 } 632 633 /* Decode the current option-ARGV-element. */ 634 635 /* Check whether the ARGV-element is a long option. 636 637 If long_only and the ARGV-element has the form "-f", where f is 638 a valid short option, don't consider it an abbreviated form of 639 a long option that starts with f. Otherwise there would be no 640 way to give the -f short option. 641 642 On the other hand, if there's a long option "fubar" and 643 the ARGV-element is "-fu", do consider that an abbreviation of 644 the long option, just like "--fu", and not "-f" with arg "u". 645 646 This distinction seems to be the most useful approach. */ 647 648 if (longopts != NULL 649 && (argv[share__optind][1] == '-' 650 || (long_only && (argv[share__optind][2] || !my_index (optstring, argv[share__optind][1]))))) 651 { 652 char *nameend; 653 const struct share__option *p; 654 const struct share__option *pfound = NULL; 655 int exact = 0; 656 int ambig = 0; 657 int indfound = -1; 658 int option_index; 659 660 for (nameend = nextchar; *nameend && *nameend != '='; nameend++) 661 /* Do nothing. */ ; 662 663 /* Test all long options for either exact match 664 or abbreviated matches. */ 665 for (p = longopts, option_index = 0; p->name; p++, option_index++) 666 if (!strncmp (p->name, nextchar, nameend - nextchar)) 667 { 668 if ((unsigned int) (nameend - nextchar) 669 == (unsigned int) strlen (p->name)) 670 { 671 /* Exact match found. */ 672 pfound = p; 673 indfound = option_index; 674 exact = 1; 675 break; 676 } 677 else if (pfound == NULL) 678 { 679 /* First nonexact match found. */ 680 pfound = p; 681 indfound = option_index; 682 } 683 else 684 /* Second or later nonexact match found. */ 685 ambig = 1; 686 } 687 688 if (ambig && !exact) 689 { 690 if (share__opterr) 691 fprintf (stderr, _("%s: option `%s' is ambiguous\n"), 692 argv[0], argv[share__optind]); 693 nextchar += strlen (nextchar); 694 share__optind++; 695 share__optopt = 0; 696 return '?'; 697 } 698 699 if (pfound != NULL) 700 { 701 option_index = indfound; 702 share__optind++; 703 if (*nameend) 704 { 705 /* Don't test has_arg with >, because some C compilers don't 706 allow it to be used on enums. */ 707 if (pfound->has_arg) 708 share__optarg = nameend + 1; 709 else 710 { 711 if (share__opterr) 712 { 713 if (argv[share__optind - 1][1] == '-') 714 /* --option */ 715 fprintf (stderr, 716 _("%s: option `--%s' doesn't allow an argument\n"), 717 argv[0], pfound->name); 718 else 719 /* +option or -option */ 720 fprintf (stderr, 721 _("%s: option `%c%s' doesn't allow an argument\n"), 722 argv[0], argv[share__optind - 1][0], pfound->name); 723 } 724 725 nextchar += strlen (nextchar); 726 727 share__optopt = pfound->val; 728 return '?'; 729 } 730 } 731 else if (pfound->has_arg == 1) 732 { 733 if (share__optind < argc) 734 share__optarg = argv[share__optind++]; 735 else 736 { 737 if (share__opterr) 738 fprintf (stderr, 739 _("%s: option `%s' requires an argument\n"), 740 argv[0], argv[share__optind - 1]); 741 nextchar += strlen (nextchar); 742 share__optopt = pfound->val; 743 return optstring[0] == ':' ? ':' : '?'; 744 } 745 } 746 nextchar += strlen (nextchar); 747 if (longind != NULL) 748 *longind = option_index; 749 if (pfound->flag) 750 { 751 *(pfound->flag) = pfound->val; 752 return 0; 753 } 754 return pfound->val; 755 } 756 757 /* Can't find it as a long option. If this is not share__getopt_long_only, 758 or the option starts with '--' or is not a valid short 759 option, then it's an error. 760 Otherwise interpret it as a short option. */ 761 if (!long_only || argv[share__optind][1] == '-' 762 || my_index (optstring, *nextchar) == NULL) 763 { 764 if (share__opterr) 765 { 766 if (argv[share__optind][1] == '-') 767 /* --option */ 768 fprintf (stderr, _("%s: unrecognized option `--%s'\n"), 769 argv[0], nextchar); 770 else 771 /* +option or -option */ 772 fprintf (stderr, _("%s: unrecognized option `%c%s'\n"), 773 argv[0], argv[share__optind][0], nextchar); 774 } 775 nextchar = (char *) ""; 776 share__optind++; 777 share__optopt = 0; 778 return '?'; 779 } 780 } 781 782 /* Look at and handle the next short option-character. */ 783 784 { 785 char c = *nextchar++; 786 char *temp = my_index (optstring, c); 787 788 /* Increment `share__optind' when we start to process its last character. */ 789 if (*nextchar == '\0') 790 ++share__optind; 791 792 if (temp == NULL || c == ':') 793 { 794 if (share__opterr) 795 { 796 if (posixly_correct) 797 /* 1003.2 specifies the format of this message. */ 798 fprintf (stderr, _("%s: illegal option -- %c\n"), 799 argv[0], c); 800 else 801 fprintf (stderr, _("%s: invalid option -- %c\n"), 802 argv[0], c); 803 } 804 share__optopt = c; 805 return '?'; 806 } 807 /* Convenience. Treat POSIX -W foo same as long option --foo */ 808 if (temp[0] == 'W' && temp[1] == ';') 809 { 810 char *nameend; 811 const struct share__option *p; 812 const struct share__option *pfound = NULL; 813 int exact = 0; 814 int ambig = 0; 815 int indfound = 0; 816 int option_index; 817 818 /* This is an option that requires an argument. */ 819 if (*nextchar != '\0') 820 { 821 share__optarg = nextchar; 822 /* If we end this ARGV-element by taking the rest as an arg, 823 we must advance to the next element now. */ 824 share__optind++; 825 } 826 else if (share__optind == argc) 827 { 828 if (share__opterr) 829 { 830 /* 1003.2 specifies the format of this message. */ 831 fprintf (stderr, _("%s: option requires an argument -- %c\n"), 832 argv[0], c); 833 } 834 share__optopt = c; 835 if (optstring[0] == ':') 836 c = ':'; 837 else 838 c = '?'; 839 return c; 840 } 841 else 842 /* We already incremented `share__optind' once; 843 increment it again when taking next ARGV-elt as argument. */ 844 share__optarg = argv[share__optind++]; 845 846 /* share__optarg is now the argument, see if it's in the 847 table of longopts. */ 848 849 for (nextchar = nameend = share__optarg; *nameend && *nameend != '='; nameend++) 850 /* Do nothing. */ ; 851 852 /* Test all long options for either exact match 853 or abbreviated matches. */ 854 for (p = longopts, option_index = 0; p->name; p++, option_index++) 855 if (!strncmp (p->name, nextchar, nameend - nextchar)) 856 { 857 if ((unsigned int) (nameend - nextchar) == strlen (p->name)) 858 { 859 /* Exact match found. */ 860 pfound = p; 861 indfound = option_index; 862 exact = 1; 863 break; 864 } 865 else if (pfound == NULL) 866 { 867 /* First nonexact match found. */ 868 pfound = p; 869 indfound = option_index; 870 } 871 else 872 /* Second or later nonexact match found. */ 873 ambig = 1; 874 } 875 if (ambig && !exact) 876 { 877 if (share__opterr) 878 fprintf (stderr, _("%s: option `-W %s' is ambiguous\n"), 879 argv[0], argv[share__optind]); 880 nextchar += strlen (nextchar); 881 share__optind++; 882 return '?'; 883 } 884 if (pfound != NULL) 885 { 886 option_index = indfound; 887 if (*nameend) 888 { 889 /* Don't test has_arg with >, because some C compilers don't 890 allow it to be used on enums. */ 891 if (pfound->has_arg) 892 share__optarg = nameend + 1; 893 else 894 { 895 if (share__opterr) 896 fprintf (stderr, _("\ 897%s: option `-W %s' doesn't allow an argument\n"), 898 argv[0], pfound->name); 899 900 nextchar += strlen (nextchar); 901 return '?'; 902 } 903 } 904 else if (pfound->has_arg == 1) 905 { 906 if (share__optind < argc) 907 share__optarg = argv[share__optind++]; 908 else 909 { 910 if (share__opterr) 911 fprintf (stderr, 912 _("%s: option `%s' requires an argument\n"), 913 argv[0], argv[share__optind - 1]); 914 nextchar += strlen (nextchar); 915 return optstring[0] == ':' ? ':' : '?'; 916 } 917 } 918 nextchar += strlen (nextchar); 919 if (longind != NULL) 920 *longind = option_index; 921 if (pfound->flag) 922 { 923 *(pfound->flag) = pfound->val; 924 return 0; 925 } 926 return pfound->val; 927 } 928 nextchar = NULL; 929 return 'W'; /* Let the application handle it. */ 930 } 931 if (temp[1] == ':') 932 { 933 if (temp[2] == ':') 934 { 935 /* This is an option that accepts an argument optionally. */ 936 if (*nextchar != '\0') 937 { 938 share__optarg = nextchar; 939 share__optind++; 940 } 941 else 942 share__optarg = NULL; 943 nextchar = NULL; 944 } 945 else 946 { 947 /* This is an option that requires an argument. */ 948 if (*nextchar != '\0') 949 { 950 share__optarg = nextchar; 951 /* If we end this ARGV-element by taking the rest as an arg, 952 we must advance to the next element now. */ 953 share__optind++; 954 } 955 else if (share__optind == argc) 956 { 957 if (share__opterr) 958 { 959 /* 1003.2 specifies the format of this message. */ 960 fprintf (stderr, 961 _("%s: option requires an argument -- %c\n"), 962 argv[0], c); 963 } 964 share__optopt = c; 965 if (optstring[0] == ':') 966 c = ':'; 967 else 968 c = '?'; 969 } 970 else 971 /* We already incremented `share__optind' once; 972 increment it again when taking next ARGV-elt as argument. */ 973 share__optarg = argv[share__optind++]; 974 nextchar = NULL; 975 } 976 } 977 return c; 978 } 979} 980 981int 982share__getopt (argc, argv, optstring) 983 int argc; 984 char *const *argv; 985 const char *optstring; 986{ 987 return share___getopt_internal (argc, argv, optstring, 988 (const struct share__option *) 0, 989 (int *) 0, 990 0); 991} 992 993#endif /* Not ELIDE_CODE. */ 994 995#ifdef TEST 996 997/* Compile with -DTEST to make an executable for use in testing 998 the above definition of `share__getopt'. */ 999 1000int 1001main (argc, argv) 1002 int argc; 1003 char **argv; 1004{ 1005 int c; 1006 int digit_optind = 0; 1007 1008 while (1) 1009 { 1010 int this_option_optind = share__optind ? share__optind : 1; 1011 1012 c = share__getopt (argc, argv, "abc:d:0123456789"); 1013 if (c == -1) 1014 break; 1015 1016 switch (c) 1017 { 1018 case '0': 1019 case '1': 1020 case '2': 1021 case '3': 1022 case '4': 1023 case '5': 1024 case '6': 1025 case '7': 1026 case '8': 1027 case '9': 1028 if (digit_optind != 0 && digit_optind != this_option_optind) 1029 printf ("digits occur in two different argv-elements.\n"); 1030 digit_optind = this_option_optind; 1031 printf ("option %c\n", c); 1032 break; 1033 1034 case 'a': 1035 printf ("option a\n"); 1036 break; 1037 1038 case 'b': 1039 printf ("option b\n"); 1040 break; 1041 1042 case 'c': 1043 printf ("option c with value `%s'\n", share__optarg); 1044 break; 1045 1046 case '?': 1047 break; 1048 1049 default: 1050 printf ("?? getopt returned character code 0%o ??\n", c); 1051 } 1052 } 1053 1054 if (share__optind < argc) 1055 { 1056 printf ("non-option ARGV-elements: "); 1057 while (share__optind < argc) 1058 printf ("%s ", argv[share__optind++]); 1059 printf ("\n"); 1060 } 1061 1062 exit (0); 1063} 1064 1065#endif /* TEST */ 1066