getopt_long.c revision 162555
1228753Smm/* $OpenBSD: getopt_long.c,v 1.17 2004/06/03 18:46:52 millert Exp $ */ 2228753Smm/* $NetBSD: getopt_long.c,v 1.15 2002/01/31 22:43:40 tv Exp $ */ 3228753Smm 4228753Smm/* 5228753Smm * Copyright (c) 2002 Todd C. Miller <Todd.Miller@courtesan.com> 6228753Smm * 7228753Smm * Permission to use, copy, modify, and distribute this software for any 8228753Smm * purpose with or without fee is hereby granted, provided that the above 9228753Smm * copyright notice and this permission notice appear in all copies. 10228753Smm * 11228753Smm * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12228753Smm * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13228753Smm * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14228753Smm * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15228753Smm * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16228753Smm * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17228753Smm * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18228753Smm * 19228753Smm * Sponsored in part by the Defense Advanced Research Projects 20228753Smm * Agency (DARPA) and Air Force Research Laboratory, Air Force 21228753Smm * Materiel Command, USAF, under agreement number F39502-99-1-0512. 22228753Smm */ 23228753Smm/*- 24228753Smm * Copyright (c) 2000 The NetBSD Foundation, Inc. 25228753Smm * All rights reserved. 26228763Smm * 27228753Smm * This code is derived from software contributed to The NetBSD Foundation 28232153Smm * by Dieter Baron and Thomas Klausner. 29228753Smm * 30228753Smm * Redistribution and use in source and binary forms, with or without 31228753Smm * modification, are permitted provided that the following conditions 32228753Smm * are met: 33228753Smm * 1. Redistributions of source code must retain the above copyright 34228753Smm * notice, this list of conditions and the following disclaimer. 35228753Smm * 2. Redistributions in binary form must reproduce the above copyright 36228753Smm * notice, this list of conditions and the following disclaimer in the 37228753Smm * documentation and/or other materials provided with the distribution. 38228753Smm * 3. All advertising materials mentioning features or use of this software 39228753Smm * must display the following acknowledgement: 40228753Smm * This product includes software developed by the NetBSD 41228753Smm * Foundation, Inc. and its contributors. 42228753Smm * 4. Neither the name of The NetBSD Foundation nor the names of its 43228753Smm * contributors may be used to endorse or promote products derived 44228753Smm * from this software without specific prior written permission. 45228753Smm * 46228753Smm * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 47228753Smm * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 48228753Smm * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 49228753Smm * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 50228753Smm * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 51228753Smm * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 52228753Smm * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 53228753Smm * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 54228753Smm * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 55228753Smm * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 56228753Smm * POSSIBILITY OF SUCH DAMAGE. 57228753Smm */ 58228753Smm 59228753Smm#if 0 60228753Smm#if defined(LIBC_SCCS) && !defined(lint) 61228753Smmstatic char *rcsid = "$OpenBSD: getopt_long.c,v 1.16 2004/02/04 18:17:25 millert Exp $"; 62228753Smm#endif /* LIBC_SCCS and not lint */ 63228753Smm#endif 64228753Smm#include <sys/cdefs.h> 65228753Smm__FBSDID("$FreeBSD: head/lib/libc/stdlib/getopt_long.c 162555 2006-09-22 17:01:38Z ache $"); 66228753Smm 67228753Smm#include <err.h> 68228753Smm#include <errno.h> 69228753Smm#include <getopt.h> 70228753Smm#include <stdlib.h> 71228753Smm#include <string.h> 72228753Smm 73228753Smm#define GNU_COMPATIBLE /* Be more compatible, configure's use us! */ 74228753Smm 75228753Smm#ifndef GNU_COMPATIBLE 76228753Smm#define REPLACE_GETOPT /* use this getopt as the system getopt(3) */ 77228753Smm#endif 78228753Smm 79228753Smm#ifdef REPLACE_GETOPT 80228753Smmint opterr = 1; /* if error message should be printed */ 81228753Smmint optind = 1; /* index into parent argv vector */ 82228753Smmint optopt = '?'; /* character checked for validity */ 83228753Smmint optreset; /* reset getopt */ 84228753Smmchar *optarg; /* argument associated with option */ 85228753Smm#endif 86228753Smm 87228753Smm#define PRINT_ERROR ((opterr) && (*options != ':')) 88228753Smm 89228753Smm#define FLAG_PERMUTE 0x01 /* permute non-options to the end of argv */ 90228753Smm#define FLAG_ALLARGS 0x02 /* treat non-options as args to option "-1" */ 91228753Smm#define FLAG_LONGONLY 0x04 /* operate as getopt_long_only */ 92228753Smm 93228753Smm/* return values */ 94228753Smm#define BADCH (int)'?' 95228753Smm#define BADARG ((*options == ':') ? (int)':' : (int)'?') 96228753Smm#define INORDER (int)1 97228753Smm 98228753Smm#define EMSG "" 99228753Smm 100228753Smm#ifdef GNU_COMPATIBLE 101228753Smm#define NO_PREFIX (-1) 102228753Smm#define D_PREFIX 0 103228753Smm#define DD_PREFIX 1 104228753Smm#define W_PREFIX 2 105228753Smm#endif 106228753Smm 107228753Smmstatic int getopt_internal(int, char * const *, const char *, 108228753Smm const struct option *, int *, int); 109228753Smmstatic int parse_long_options(char * const *, const char *, 110228753Smm const struct option *, int *, int, int); 111228753Smmstatic int gcd(int, int); 112228753Smmstatic void permute_args(int, int, int, char * const *); 113228753Smm 114228753Smmstatic char *place = EMSG; /* option letter processing */ 115228753Smm 116228753Smm/* XXX: set optreset to 1 rather than these two */ 117228753Smmstatic int nonopt_start = -1; /* first non option argument (for permute) */ 118228753Smmstatic int nonopt_end = -1; /* first option after non options (for permute) */ 119228753Smm 120228753Smm/* Error messages */ 121228753Smmstatic const char recargchar[] = "option requires an argument -- %c"; 122228753Smmstatic const char illoptchar[] = "illegal option -- %c"; /* From P1003.2 */ 123228753Smm#ifdef GNU_COMPATIBLE 124228753Smmstatic int dash_prefix = NO_PREFIX; 125228753Smmstatic const char gnuoptchar[] = "invalid option -- %c"; 126228753Smm 127228753Smmstatic const char recargstring[] = "option `%s%s' requires an argument"; 128232153Smmstatic const char ambig[] = "option `%s%.*s' is ambiguous"; 129228753Smmstatic const char noarg[] = "option `%s%.*s' doesn't allow an argument"; 130228753Smmstatic const char illoptstring[] = "unrecognized option `%s%s'"; 131228753Smm#else 132228753Smmstatic const char recargstring[] = "option requires an argument -- %s"; 133228753Smmstatic const char ambig[] = "ambiguous option -- %.*s"; 134228753Smmstatic const char noarg[] = "option doesn't take an argument -- %.*s"; 135228753Smmstatic const char illoptstring[] = "unknown option -- %s"; 136228753Smm#endif 137228753Smm 138228753Smm/* 139228753Smm * Compute the greatest common divisor of a and b. 140228753Smm */ 141228753Smmstatic int 142228753Smmgcd(int a, int b) 143228753Smm{ 144228753Smm int c; 145228753Smm 146228753Smm c = a % b; 147228753Smm while (c != 0) { 148228753Smm a = b; 149228753Smm b = c; 150228753Smm c = a % b; 151228753Smm } 152228753Smm 153228753Smm return (b); 154228753Smm} 155228753Smm 156228753Smm/* 157228753Smm * Exchange the block from nonopt_start to nonopt_end with the block 158228753Smm * from nonopt_end to opt_end (keeping the same order of arguments 159228753Smm * in each block). 160228753Smm */ 161228753Smmstatic void 162228753Smmpermute_args(int panonopt_start, int panonopt_end, int opt_end, 163228753Smm char * const *nargv) 164228753Smm{ 165228753Smm int cstart, cyclelen, i, j, ncycle, nnonopts, nopts, pos; 166228753Smm char *swap; 167228753Smm 168228753Smm /* 169228753Smm * compute lengths of blocks and number and size of cycles 170228753Smm */ 171228753Smm nnonopts = panonopt_end - panonopt_start; 172228753Smm nopts = opt_end - panonopt_end; 173228753Smm ncycle = gcd(nnonopts, nopts); 174228753Smm cyclelen = (opt_end - panonopt_start) / ncycle; 175228753Smm 176228753Smm for (i = 0; i < ncycle; i++) { 177228753Smm cstart = panonopt_end+i; 178228753Smm pos = cstart; 179228753Smm for (j = 0; j < cyclelen; j++) { 180228753Smm if (pos >= panonopt_end) 181228753Smm pos -= nnonopts; 182228753Smm else 183228753Smm pos += nopts; 184228753Smm swap = nargv[pos]; 185228753Smm /* LINTED const cast */ 186228753Smm ((char **) nargv)[pos] = nargv[cstart]; 187228753Smm /* LINTED const cast */ 188228753Smm ((char **)nargv)[cstart] = swap; 189228753Smm } 190228753Smm } 191228753Smm} 192228753Smm 193228753Smm/* 194228753Smm * parse_long_options -- 195228753Smm * Parse long options in argc/argv argument vector. 196228753Smm * Returns -1 if short_too is set and the option does not match long_options. 197228753Smm */ 198228753Smmstatic int 199228753Smmparse_long_options(char * const *nargv, const char *options, 200228753Smm const struct option *long_options, int *idx, int short_too, int flags) 201228753Smm{ 202228753Smm char *current_argv, *has_equal; 203228753Smm#ifdef GNU_COMPATIBLE 204228753Smm char *current_dash; 205228753Smm#endif 206228753Smm size_t current_argv_len; 207228753Smm int i, match, exact_match, second_partial_match; 208228753Smm 209228753Smm current_argv = place; 210228753Smm#ifdef GNU_COMPATIBLE 211228753Smm switch (dash_prefix) { 212228753Smm case D_PREFIX: 213228753Smm current_dash = "-"; 214228753Smm break; 215228753Smm case DD_PREFIX: 216228753Smm current_dash = "--"; 217228753Smm break; 218228753Smm case W_PREFIX: 219228753Smm current_dash = "-W "; 220228753Smm break; 221228753Smm default: 222228753Smm current_dash = ""; 223228753Smm break; 224228753Smm } 225228753Smm#endif 226228753Smm match = -1; 227228753Smm exact_match = 0; 228228753Smm second_partial_match = 0; 229228753Smm 230228753Smm optind++; 231228753Smm 232228753Smm if ((has_equal = strchr(current_argv, '=')) != NULL) { 233228753Smm /* argument found (--option=arg) */ 234228753Smm current_argv_len = has_equal - current_argv; 235228753Smm has_equal++; 236228753Smm } else 237228753Smm current_argv_len = strlen(current_argv); 238228753Smm 239228753Smm for (i = 0; long_options[i].name; i++) { 240228753Smm /* find matching long option */ 241228753Smm if (strncmp(current_argv, long_options[i].name, 242228753Smm current_argv_len)) 243228753Smm continue; 244228753Smm 245228753Smm if (strlen(long_options[i].name) == current_argv_len) { 246228753Smm /* exact match */ 247228753Smm match = i; 248228753Smm exact_match = 1; 249228753Smm break; 250228753Smm } 251228753Smm /* 252228753Smm * If this is a known short option, don't allow 253228753Smm * a partial match of a single character. 254228753Smm */ 255228753Smm if (short_too && current_argv_len == 1) 256228753Smm continue; 257228753Smm 258228753Smm if (match == -1) /* first partial match */ 259228753Smm match = i; 260228753Smm else if ((flags & FLAG_LONGONLY) || 261228753Smm long_options[i].has_arg != 262228753Smm long_options[match].has_arg || 263228753Smm long_options[i].flag != long_options[match].flag || 264228753Smm long_options[i].val != long_options[match].val) 265228753Smm second_partial_match = 1; 266228753Smm } 267228753Smm if (!exact_match && second_partial_match) { 268228753Smm /* ambiguous abbreviation */ 269228753Smm if (PRINT_ERROR) 270228753Smm warnx(ambig, 271228753Smm#ifdef GNU_COMPATIBLE 272228753Smm current_dash, 273228753Smm#endif 274228753Smm (int)current_argv_len, 275228753Smm current_argv); 276228753Smm optopt = 0; 277228753Smm return (BADCH); 278228753Smm } 279228753Smm if (match != -1) { /* option found */ 280228753Smm if (long_options[match].has_arg == no_argument 281228753Smm && has_equal) { 282228753Smm if (PRINT_ERROR) 283228753Smm warnx(noarg, 284228753Smm#ifdef GNU_COMPATIBLE 285228753Smm current_dash, 286228753Smm#endif 287228753Smm (int)current_argv_len, 288228753Smm current_argv); 289228753Smm /* 290228753Smm * XXX: GNU sets optopt to val regardless of flag 291228753Smm */ 292228753Smm if (long_options[match].flag == NULL) 293228753Smm optopt = long_options[match].val; 294228753Smm else 295228753Smm optopt = 0; 296228753Smm#ifdef GNU_COMPATIBLE 297228753Smm return (BADCH); 298228753Smm#else 299228753Smm return (BADARG); 300228753Smm#endif 301228753Smm } 302228753Smm if (long_options[match].has_arg == required_argument || 303228753Smm long_options[match].has_arg == optional_argument) { 304228753Smm if (has_equal) 305228753Smm optarg = has_equal; 306228753Smm else if (long_options[match].has_arg == 307228753Smm required_argument) { 308228753Smm /* 309228753Smm * optional argument doesn't use next nargv 310228753Smm */ 311228753Smm optarg = nargv[optind++]; 312228753Smm } 313228753Smm } 314228753Smm if ((long_options[match].has_arg == required_argument) 315228753Smm && (optarg == NULL)) { 316228753Smm /* 317228753Smm * Missing argument; leading ':' indicates no error 318228753Smm * should be generated. 319228753Smm */ 320228753Smm if (PRINT_ERROR) 321228753Smm warnx(recargstring, 322228753Smm#ifdef GNU_COMPATIBLE 323228753Smm current_dash, 324228753Smm#endif 325228753Smm current_argv); 326228753Smm /* 327228753Smm * XXX: GNU sets optopt to val regardless of flag 328228753Smm */ 329228753Smm if (long_options[match].flag == NULL) 330228753Smm optopt = long_options[match].val; 331228753Smm else 332228753Smm optopt = 0; 333228753Smm --optind; 334228753Smm return (BADARG); 335228753Smm } 336228753Smm } else { /* unknown option */ 337228753Smm if (short_too) { 338228753Smm --optind; 339228753Smm return (-1); 340228753Smm } 341228753Smm if (PRINT_ERROR) 342228753Smm warnx(illoptstring, 343228753Smm#ifdef GNU_COMPATIBLE 344228753Smm current_dash, 345228753Smm#endif 346228753Smm current_argv); 347228753Smm optopt = 0; 348228753Smm return (BADCH); 349228753Smm } 350228753Smm if (idx) 351228753Smm *idx = match; 352228753Smm if (long_options[match].flag) { 353228753Smm *long_options[match].flag = long_options[match].val; 354228753Smm return (0); 355228753Smm } else 356228753Smm return (long_options[match].val); 357228753Smm} 358228753Smm 359228753Smm/* 360228753Smm * getopt_internal -- 361228753Smm * Parse argc/argv argument vector. Called by user level routines. 362228753Smm */ 363228753Smmstatic int 364228753Smmgetopt_internal(int nargc, char * const *nargv, const char *options, 365228753Smm const struct option *long_options, int *idx, int flags) 366228753Smm{ 367228753Smm char *oli; /* option letter list index */ 368232153Smm int optchar, short_too; 369228753Smm int posixly_correct; 370228753Smm 371228753Smm if (options == NULL) 372228753Smm return (-1); 373228753Smm 374228753Smm /* 375228753Smm * Disable GNU extensions if POSIXLY_CORRECT is set or options 376228753Smm * string begins with a '+'. 377228753Smm */ 378228753Smm posixly_correct = (getenv("POSIXLY_CORRECT") != NULL); 379228753Smm#ifdef GNU_COMPATIBLE 380228753Smm if (*options == '-') 381228753Smm flags |= FLAG_ALLARGS; 382228753Smm else if (posixly_correct || *options == '+') 383228753Smm flags &= ~FLAG_PERMUTE; 384228753Smm#else 385228753Smm if (posixly_correct || *options == '+') 386228753Smm flags &= ~FLAG_PERMUTE; 387228753Smm else if (*options == '-') 388228753Smm flags |= FLAG_ALLARGS; 389228753Smm#endif 390228753Smm if (*options == '+' || *options == '-') 391228753Smm options++; 392228753Smm 393228753Smm /* 394228753Smm * XXX Some GNU programs (like cvs) set optind to 0 instead of 395228753Smm * XXX using optreset. Work around this braindamage. 396228753Smm */ 397228753Smm if (optind == 0) 398228753Smm optind = optreset = 1; 399228753Smm 400228753Smm optarg = NULL; 401228753Smm if (optreset) 402228753Smm nonopt_start = nonopt_end = -1; 403228753Smmstart: 404228753Smm if (optreset || !*place) { /* update scanning pointer */ 405228753Smm optreset = 0; 406228753Smm if (optind >= nargc) { /* end of argument vector */ 407228753Smm place = EMSG; 408228753Smm if (nonopt_end != -1) { 409228753Smm /* do permutation, if we have to */ 410228753Smm permute_args(nonopt_start, nonopt_end, 411228753Smm optind, nargv); 412228753Smm optind -= nonopt_end - nonopt_start; 413228753Smm } 414228753Smm else if (nonopt_start != -1) { 415228753Smm /* 416228753Smm * If we skipped non-options, set optind 417228753Smm * to the first of them. 418228753Smm */ 419228753Smm optind = nonopt_start; 420228753Smm } 421228753Smm nonopt_start = nonopt_end = -1; 422228753Smm return (-1); 423228753Smm } 424228753Smm if (*(place = nargv[optind]) != '-' || 425228753Smm#ifdef GNU_COMPATIBLE 426228753Smm place[1] == '\0') { 427228753Smm#else 428228753Smm (place[1] == '\0' && strchr(options, '-') == NULL)) { 429228753Smm#endif 430228753Smm place = EMSG; /* found non-option */ 431228753Smm if (flags & FLAG_ALLARGS) { 432228753Smm /* 433228753Smm * GNU extension: 434228753Smm * return non-option as argument to option 1 435228753Smm */ 436228753Smm optarg = nargv[optind++]; 437228753Smm return (INORDER); 438228753Smm } 439228753Smm if (!(flags & FLAG_PERMUTE)) { 440228753Smm /* 441228753Smm * If no permutation wanted, stop parsing 442228753Smm * at first non-option. 443228753Smm */ 444228753Smm return (-1); 445228753Smm } 446228753Smm /* do permutation */ 447228753Smm if (nonopt_start == -1) 448228753Smm nonopt_start = optind; 449228753Smm else if (nonopt_end != -1) { 450228753Smm permute_args(nonopt_start, nonopt_end, 451228753Smm optind, nargv); 452228753Smm nonopt_start = optind - 453228753Smm (nonopt_end - nonopt_start); 454 nonopt_end = -1; 455 } 456 optind++; 457 /* process next argument */ 458 goto start; 459 } 460 if (nonopt_start != -1 && nonopt_end == -1) 461 nonopt_end = optind; 462 463 /* 464 * If we have "-" do nothing, if "--" we are done. 465 */ 466 if (place[1] != '\0' && *++place == '-' && place[1] == '\0') { 467 optind++; 468 place = EMSG; 469 /* 470 * We found an option (--), so if we skipped 471 * non-options, we have to permute. 472 */ 473 if (nonopt_end != -1) { 474 permute_args(nonopt_start, nonopt_end, 475 optind, nargv); 476 optind -= nonopt_end - nonopt_start; 477 } 478 nonopt_start = nonopt_end = -1; 479 return (-1); 480 } 481 } 482 483 /* 484 * Check long options if: 485 * 1) we were passed some 486 * 2) the arg is not just "-" 487 * 3) either the arg starts with -- we are getopt_long_only() 488 */ 489 if (long_options != NULL && place != nargv[optind] && 490 (*place == '-' || (flags & FLAG_LONGONLY))) { 491 short_too = 0; 492#ifdef GNU_COMPATIBLE 493 dash_prefix = D_PREFIX; 494#endif 495 if (*place == '-') { 496 place++; /* --foo long option */ 497#ifdef GNU_COMPATIBLE 498 dash_prefix = DD_PREFIX; 499#endif 500 } else if (*place != ':' && strchr(options, *place) != NULL) 501 short_too = 1; /* could be short option too */ 502 503 optchar = parse_long_options(nargv, options, long_options, 504 idx, short_too, flags); 505 if (optchar != -1) { 506 place = EMSG; 507 return (optchar); 508 } 509 } 510 511 if ((optchar = (int)*place++) == (int)':' || 512 (optchar == (int)'-' && *place != '\0') || 513 (oli = strchr(options, optchar)) == NULL) { 514 /* 515 * If the user specified "-" and '-' isn't listed in 516 * options, return -1 (non-option) as per POSIX. 517 * Otherwise, it is an unknown option character (or ':'). 518 */ 519 if (optchar == (int)'-' && *place == '\0') 520 return (-1); 521 if (!*place) 522 ++optind; 523#ifdef GNU_COMPATIBLE 524 if (PRINT_ERROR) 525 warnx(posixly_correct ? illoptchar : gnuoptchar, 526 optchar); 527#else 528 if (PRINT_ERROR) 529 warnx(illoptchar, optchar); 530#endif 531 optopt = optchar; 532 return (BADCH); 533 } 534 if (long_options != NULL && optchar == 'W' && oli[1] == ';') { 535 /* -W long-option */ 536 if (*place) /* no space */ 537 /* NOTHING */; 538 else if (++optind >= nargc) { /* no arg */ 539 place = EMSG; 540 if (PRINT_ERROR) 541 warnx(recargchar, optchar); 542 optopt = optchar; 543 return (BADARG); 544 } else /* white space */ 545 place = nargv[optind]; 546#ifdef GNU_COMPATIBLE 547 dash_prefix = W_PREFIX; 548#endif 549 optchar = parse_long_options(nargv, options, long_options, 550 idx, 0, flags); 551 place = EMSG; 552 return (optchar); 553 } 554 if (*++oli != ':') { /* doesn't take argument */ 555 if (!*place) 556 ++optind; 557 } else { /* takes (optional) argument */ 558 optarg = NULL; 559 if (*place) /* no white space */ 560 optarg = place; 561 else if (oli[1] != ':') { /* arg not optional */ 562 if (++optind >= nargc) { /* no arg */ 563 place = EMSG; 564 if (PRINT_ERROR) 565 warnx(recargchar, optchar); 566 optopt = optchar; 567 return (BADARG); 568 } else 569 optarg = nargv[optind]; 570 } 571#ifndef GNU_COMPATIBLE 572 /* XXX: disable test for :: if PC? (GNU doesn't) */ 573 else if (!(flags & FLAG_PERMUTE)) { 574 /* 575 * If permutation is disabled, we can accept an 576 * optional arg separated by whitespace so long 577 * as it does not start with a dash (-). 578 */ 579 if (optind + 1 < nargc && *nargv[optind + 1] != '-') 580 optarg = nargv[++optind]; 581 } 582#endif 583 place = EMSG; 584 ++optind; 585 } 586 /* dump back option letter */ 587 return (optchar); 588} 589 590#ifdef REPLACE_GETOPT 591/* 592 * getopt -- 593 * Parse argc/argv argument vector. 594 * 595 * [eventually this will replace the BSD getopt] 596 */ 597int 598getopt(int nargc, char * const *nargv, const char *options) 599{ 600 601 /* 602 * We don't pass FLAG_PERMUTE to getopt_internal() since 603 * the BSD getopt(3) (unlike GNU) has never done this. 604 * 605 * Furthermore, since many privileged programs call getopt() 606 * before dropping privileges it makes sense to keep things 607 * as simple (and bug-free) as possible. 608 */ 609 return (getopt_internal(nargc, nargv, options, NULL, NULL, 0)); 610} 611#endif /* REPLACE_GETOPT */ 612 613/* 614 * getopt_long -- 615 * Parse argc/argv argument vector. 616 */ 617int 618getopt_long(nargc, nargv, options, long_options, idx) 619 int nargc; 620 char * const *nargv; 621 const char *options; 622 const struct option *long_options; 623 int *idx; 624{ 625 626 return (getopt_internal(nargc, nargv, options, long_options, idx, 627 FLAG_PERMUTE)); 628} 629 630/* 631 * getopt_long_only -- 632 * Parse argc/argv argument vector. 633 */ 634int 635getopt_long_only(nargc, nargv, options, long_options, idx) 636 int nargc; 637 char * const *nargv; 638 const char *options; 639 const struct option *long_options; 640 int *idx; 641{ 642 643 return (getopt_internal(nargc, nargv, options, long_options, idx, 644 FLAG_PERMUTE|FLAG_LONGONLY)); 645} 646