Annotation of gforth/getopt.c, revision 1.1
1.1 ! anton 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 roland@gnu.ai.mit.edu
! 4: before changing it!
! 5:
! 6: Copyright (C) 1987, 88, 89, 90, 91, 92, 1993
! 7: Free Software Foundation, Inc.
! 8:
! 9: This program is free software; you can redistribute it and/or modify it
! 10: under the terms of the GNU General Public License as published by the
! 11: Free Software Foundation; either version 2, or (at your option) any
! 12: later version.
! 13:
! 14: This program is distributed in the hope that it will be useful,
! 15: but WITHOUT ANY WARRANTY; without even the implied warranty of
! 16: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
! 17: GNU General Public License for more details.
! 18:
! 19: You should have received a copy of the GNU General Public License
! 20: along with this program; if not, write to the Free Software
! 21: Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
! 22:
! 23: /* NOTE!!! AIX requires this to be the first thing in the file.
! 24: Do not put ANYTHING before it! */
! 25: #if !defined (__GNUC__) && defined (_AIX)
! 26: #pragma alloca
! 27: #endif
! 28:
! 29: #ifdef HAVE_CONFIG_H
! 30: #include "config.h"
! 31: #endif
! 32:
! 33: #ifdef __GNUC__
! 34: #define alloca __builtin_alloca
! 35: #else /* not __GNUC__ */
! 36: #if defined (HAVE_ALLOCA_H) || (defined(sparc) && (defined(sun) || (!defined(USG) && !defined(SVR4) && !defined(__svr4__))))
! 37: #include <alloca.h>
! 38: #else
! 39: #ifndef _AIX
! 40: char *alloca ();
! 41: #endif
! 42: #endif /* alloca.h */
! 43: #endif /* not __GNUC__ */
! 44:
! 45: #if !__STDC__ && !defined(const) && IN_GCC
! 46: #define const
! 47: #endif
! 48:
! 49: /* This tells Alpha OSF/1 not to define a getopt prototype in <stdio.h>. */
! 50: #ifndef _NO_PROTO
! 51: #define _NO_PROTO
! 52: #endif
! 53:
! 54: #include <stdio.h>
! 55:
! 56: /* Comment out all this code if we are using the GNU C Library, and are not
! 57: actually compiling the library itself. This code is part of the GNU C
! 58: Library, but also included in many other GNU distributions. Compiling
! 59: and linking in this code is a waste when using the GNU C library
! 60: (especially if it is a shared library). Rather than having every GNU
! 61: program understand `configure --with-gnu-libc' and omit the object files,
! 62: it is simpler to just do this in the source for each such file. */
! 63:
! 64: #if defined (_LIBC) || !defined (__GNU_LIBRARY__)
! 65:
! 66:
! 67: /* This needs to come after some library #include
! 68: to get __GNU_LIBRARY__ defined. */
! 69: #ifdef __GNU_LIBRARY__
! 70: #undef alloca
! 71: /* Don't include stdlib.h for non-GNU C libraries because some of them
! 72: contain conflicting prototypes for getopt. */
! 73: #include <stdlib.h>
! 74: #else /* Not GNU C library. */
! 75: #define __alloca alloca
! 76: #endif /* GNU C library. */
! 77:
! 78: #if !defined (__STDC__) && !defined (const)
! 79: # define const
! 80: #endif
! 81:
! 82: /* If GETOPT_COMPAT is defined, `+' as well as `--' can introduce a
! 83: long-named option. Because this is not POSIX.2 compliant, it is
! 84: being phased out. */
! 85: /* #define GETOPT_COMPAT */
! 86:
! 87: /* This version of `getopt' appears to the caller like standard Unix `getopt'
! 88: but it behaves differently for the user, since it allows the user
! 89: to intersperse the options with the other arguments.
! 90:
! 91: As `getopt' works, it permutes the elements of ARGV so that,
! 92: when it is done, all the options precede everything else. Thus
! 93: all application programs are extended to handle flexible argument order.
! 94:
! 95: Setting the environment variable POSIXLY_CORRECT disables permutation.
! 96: Then the behavior is completely standard.
! 97:
! 98: GNU application programs can use a third alternative mode in which
! 99: they can distinguish the relative order of options and other arguments. */
! 100:
! 101: #include "getopt.h"
! 102:
! 103: /* For communication from `getopt' to the caller.
! 104: When `getopt' finds an option that takes an argument,
! 105: the argument value is returned here.
! 106: Also, when `ordering' is RETURN_IN_ORDER,
! 107: each non-option ARGV-element is returned here. */
! 108:
! 109: char *optarg = 0;
! 110:
! 111: /* Index in ARGV of the next element to be scanned.
! 112: This is used for communication to and from the caller
! 113: and for communication between successive calls to `getopt'.
! 114:
! 115: On entry to `getopt', zero means this is the first call; initialize.
! 116:
! 117: When `getopt' returns EOF, this is the index of the first of the
! 118: non-option elements that the caller should itself scan.
! 119:
! 120: Otherwise, `optind' communicates from one call to the next
! 121: how much of ARGV has been scanned so far. */
! 122:
! 123: /* XXX 1003.2 says this must be 1 before any call. */
! 124: int optind = 0;
! 125:
! 126: /* The next char to be scanned in the option-element
! 127: in which the last option character we returned was found.
! 128: This allows us to pick up the scan where we left off.
! 129:
! 130: If this is zero, or a null string, it means resume the scan
! 131: by advancing to the next ARGV-element. */
! 132:
! 133: static char *nextchar;
! 134:
! 135: /* Callers store zero here to inhibit the error message
! 136: for unrecognized options. */
! 137:
! 138: int opterr = 1;
! 139:
! 140: /* Set to an option character which was unrecognized.
! 141: This must be initialized on some systems to avoid linking in the
! 142: system's own getopt implementation. */
! 143:
! 144: int optopt = '?';
! 145:
! 146: /* Describe how to deal with options that follow non-option ARGV-elements.
! 147:
! 148: If the caller did not specify anything,
! 149: the default is REQUIRE_ORDER if the environment variable
! 150: POSIXLY_CORRECT is defined, PERMUTE otherwise.
! 151:
! 152: REQUIRE_ORDER means don't recognize them as options;
! 153: stop option processing when the first non-option is seen.
! 154: This is what Unix does.
! 155: This mode of operation is selected by either setting the environment
! 156: variable POSIXLY_CORRECT, or using `+' as the first character
! 157: of the list of option characters.
! 158:
! 159: PERMUTE is the default. We permute the contents of ARGV as we scan,
! 160: so that eventually all the non-options are at the end. This allows options
! 161: to be given in any order, even with programs that were not written to
! 162: expect this.
! 163:
! 164: RETURN_IN_ORDER is an option available to programs that were written
! 165: to expect options and other ARGV-elements in any order and that care about
! 166: the ordering of the two. We describe each non-option ARGV-element
! 167: as if it were the argument of an option with character code 1.
! 168: Using `-' as the first character of the list of option characters
! 169: selects this mode of operation.
! 170:
! 171: The special argument `--' forces an end of option-scanning regardless
! 172: of the value of `ordering'. In the case of RETURN_IN_ORDER, only
! 173: `--' can cause `getopt' to return EOF with `optind' != ARGC. */
! 174:
! 175: static enum
! 176: {
! 177: REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER
! 178: } ordering, default_ordering = PERMUTE;
! 179:
! 180: #ifdef __GNU_LIBRARY__
! 181: /* We want to avoid inclusion of string.h with non-GNU libraries
! 182: because there are many ways it can cause trouble.
! 183: On some systems, it contains special magic macros that don't work
! 184: in GCC. */
! 185: #include <string.h>
! 186: #define my_index strchr
! 187: #define my_bcopy(src, dst, n) memcpy ((dst), (src), (n))
! 188: #else
! 189:
! 190: /* Avoid depending on library functions or files
! 191: whose names are inconsistent. */
! 192:
! 193: char *getenv ();
! 194:
! 195: static char *
! 196: my_index (str, chr)
! 197: const char *str;
! 198: int chr;
! 199: {
! 200: while (*str)
! 201: {
! 202: if (*str == chr)
! 203: return (char *) str;
! 204: str++;
! 205: }
! 206: return 0;
! 207: }
! 208:
! 209: static void
! 210: my_bcopy (from, to, size)
! 211: const char *from;
! 212: char *to;
! 213: int size;
! 214: {
! 215: int i;
! 216: for (i = 0; i < size; i++)
! 217: to[i] = from[i];
! 218: }
! 219: #endif /* GNU C library. */
! 220:
! 221: /* Handle permutation of arguments. */
! 222:
! 223: /* Describe the part of ARGV that contains non-options that have
! 224: been skipped. `first_nonopt' is the index in ARGV of the first of them;
! 225: `last_nonopt' is the index after the last of them. */
! 226:
! 227: static int first_nonopt;
! 228: static int last_nonopt;
! 229:
! 230: /* Exchange two adjacent subsequences of ARGV.
! 231: One subsequence is elements [first_nonopt,last_nonopt)
! 232: which contains all the non-options that have been skipped so far.
! 233: The other is elements [last_nonopt,optind), which contains all
! 234: the options processed since those non-options were skipped.
! 235:
! 236: `first_nonopt' and `last_nonopt' are relocated so that they describe
! 237: the new indices of the non-options in ARGV after they are moved. */
! 238:
! 239: static void
! 240: exchange (argv)
! 241: char **argv;
! 242: {
! 243: int nonopts_size = (last_nonopt - first_nonopt) * sizeof (char *);
! 244: char **temp = (char **) __alloca (nonopts_size);
! 245:
! 246: /* Interchange the two blocks of data in ARGV. */
! 247:
! 248: my_bcopy ((char *) &argv[first_nonopt], (char *) temp, nonopts_size);
! 249: my_bcopy ((char *) &argv[last_nonopt], (char *) &argv[first_nonopt],
! 250: (optind - last_nonopt) * sizeof (char *));
! 251: my_bcopy ((char *) temp,
! 252: (char *) &argv[first_nonopt + optind - last_nonopt],
! 253: nonopts_size);
! 254:
! 255: /* Update records for the slots the non-options now occupy. */
! 256:
! 257: first_nonopt += (optind - last_nonopt);
! 258: last_nonopt = optind;
! 259: }
! 260:
! 261: /* Scan elements of ARGV (whose length is ARGC) for option characters
! 262: given in OPTSTRING.
! 263:
! 264: If an element of ARGV starts with '-', and is not exactly "-" or "--",
! 265: then it is an option element. The characters of this element
! 266: (aside from the initial '-') are option characters. If `getopt'
! 267: is called repeatedly, it returns successively each of the option characters
! 268: from each of the option elements.
! 269:
! 270: If `getopt' finds another option character, it returns that character,
! 271: updating `optind' and `nextchar' so that the next call to `getopt' can
! 272: resume the scan with the following option character or ARGV-element.
! 273:
! 274: If there are no more option characters, `getopt' returns `EOF'.
! 275: Then `optind' is the index in ARGV of the first ARGV-element
! 276: that is not an option. (The ARGV-elements have been permuted
! 277: so that those that are not options now come last.)
! 278:
! 279: OPTSTRING is a string containing the legitimate option characters.
! 280: If an option character is seen that is not listed in OPTSTRING,
! 281: return '?' after printing an error message. If you set `opterr' to
! 282: zero, the error message is suppressed but we still return '?'.
! 283:
! 284: If a char in OPTSTRING is followed by a colon, that means it wants an arg,
! 285: so the following text in the same ARGV-element, or the text of the following
! 286: ARGV-element, is returned in `optarg'. Two colons mean an option that
! 287: wants an optional arg; if there is text in the current ARGV-element,
! 288: it is returned in `optarg', otherwise `optarg' is set to zero.
! 289:
! 290: If OPTSTRING starts with `-' or `+', it requests different methods of
! 291: handling the non-option ARGV-elements.
! 292: See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above.
! 293:
! 294: Long-named options begin with `--' instead of `-'.
! 295: Their names may be abbreviated as long as the abbreviation is unique
! 296: or is an exact match for some defined option. If they have an
! 297: argument, it follows the option name in the same ARGV-element, separated
! 298: from the option name by a `=', or else the in next ARGV-element.
! 299: When `getopt' finds a long-named option, it returns 0 if that option's
! 300: `flag' field is nonzero, the value of the option's `val' field
! 301: if the `flag' field is zero.
! 302:
! 303: The elements of ARGV aren't really const, because we permute them.
! 304: But we pretend they're const in the prototype to be compatible
! 305: with other systems.
! 306:
! 307: LONGOPTS is a vector of `struct option' terminated by an
! 308: element containing a name which is zero.
! 309:
! 310: LONGIND returns the index in LONGOPT of the long-named option found.
! 311: It is only valid when a long-named option has been found by the most
! 312: recent call.
! 313:
! 314: If LONG_ONLY is nonzero, '-' as well as '--' can introduce
! 315: long-named options. */
! 316:
! 317: /* Call this function with an argument of 1 to set the default option
! 318: ordering to that required by Posix. The normal default is PERMUTE. */
! 319: void
! 320: getopt_set_posix_option_order (on_or_off)
! 321: int on_or_off;
! 322: {
! 323: if (on_or_off == 1)
! 324: default_ordering = REQUIRE_ORDER;
! 325: else
! 326: default_ordering = PERMUTE;
! 327: }
! 328:
! 329: int
! 330: _getopt_internal (argc, argv, optstring, longopts, longind, long_only)
! 331: int argc;
! 332: char *const *argv;
! 333: const char *optstring;
! 334: const struct option *longopts;
! 335: int *longind;
! 336: int long_only;
! 337: {
! 338: int option_index;
! 339:
! 340: optarg = 0;
! 341:
! 342: if (optind > argc || optind < 0)
! 343: {
! 344: optind = argc;
! 345: return (EOF);
! 346: }
! 347:
! 348: /* Initialize the internal data when the first call is made.
! 349: Start processing options with ARGV-element 1 (since ARGV-element 0
! 350: is the program name); the sequence of previously skipped
! 351: non-option ARGV-elements is empty. */
! 352:
! 353: if (optind == 0)
! 354: {
! 355: first_nonopt = last_nonopt = optind = 1;
! 356:
! 357: nextchar = NULL;
! 358:
! 359: /* Determine how to handle the ordering of options and nonoptions. */
! 360:
! 361: if (optstring[0] == '-')
! 362: {
! 363: ordering = RETURN_IN_ORDER;
! 364: ++optstring;
! 365: }
! 366: else if (optstring[0] == '+')
! 367: {
! 368: ordering = REQUIRE_ORDER;
! 369: ++optstring;
! 370: }
! 371: else if (getenv ("POSIXLY_CORRECT") != NULL)
! 372: ordering = REQUIRE_ORDER;
! 373: else
! 374: ordering = default_ordering;
! 375: }
! 376:
! 377: if (nextchar == NULL || *nextchar == '\0')
! 378: {
! 379: if (ordering == PERMUTE)
! 380: {
! 381: /* If we have just processed some options following some non-options,
! 382: exchange them so that the options come first. */
! 383:
! 384: if (first_nonopt != last_nonopt && last_nonopt != optind)
! 385: exchange ((char **) argv);
! 386: else if (last_nonopt != optind)
! 387: first_nonopt = optind;
! 388:
! 389: /* Now skip any additional non-options
! 390: and extend the range of non-options previously skipped. */
! 391:
! 392: while (optind < argc
! 393: && (argv[optind][0] != '-' || argv[optind][1] == '\0')
! 394: #ifdef GETOPT_COMPAT
! 395: && (longopts == NULL
! 396: || argv[optind][0] != '+' || argv[optind][1] == '\0')
! 397: #endif /* GETOPT_COMPAT */
! 398: )
! 399: optind++;
! 400: last_nonopt = optind;
! 401: }
! 402:
! 403: /* Special ARGV-element `--' means premature end of options.
! 404: Skip it like a null option,
! 405: then exchange with previous non-options as if it were an option,
! 406: then skip everything else like a non-option. */
! 407:
! 408: if (optind != argc && !strcmp (argv[optind], "--"))
! 409: {
! 410: optind++;
! 411:
! 412: if (first_nonopt != last_nonopt && last_nonopt != optind)
! 413: exchange ((char **) argv);
! 414: else if (first_nonopt == last_nonopt)
! 415: first_nonopt = optind;
! 416: last_nonopt = argc;
! 417:
! 418: optind = argc;
! 419: }
! 420:
! 421: /* If we have done all the ARGV-elements, stop the scan
! 422: and back over any non-options that we skipped and permuted. */
! 423:
! 424: if (optind == argc)
! 425: {
! 426: /* Set the next-arg-index to point at the non-options
! 427: that we previously skipped, so the caller will digest them. */
! 428: if (first_nonopt != last_nonopt)
! 429: optind = first_nonopt;
! 430: return EOF;
! 431: }
! 432:
! 433: /* If we have come to a non-option and did not permute it,
! 434: either stop the scan or describe it to the caller and pass it by. */
! 435:
! 436: if ((argv[optind][0] != '-' || argv[optind][1] == '\0')
! 437: #ifdef GETOPT_COMPAT
! 438: && (longopts == NULL
! 439: || argv[optind][0] != '+' || argv[optind][1] == '\0')
! 440: #endif /* GETOPT_COMPAT */
! 441: )
! 442: {
! 443: if (ordering == REQUIRE_ORDER)
! 444: return EOF;
! 445: optarg = argv[optind++];
! 446: return 1;
! 447: }
! 448:
! 449: /* We have found another option-ARGV-element.
! 450: Start decoding its characters. */
! 451:
! 452: nextchar = (argv[optind] + 1
! 453: + (longopts != NULL && argv[optind][1] == '-'));
! 454: }
! 455:
! 456: if (longopts != NULL
! 457: && ((argv[optind][0] == '-'
! 458: && (argv[optind][1] == '-' || long_only))
! 459: #ifdef GETOPT_COMPAT
! 460: || argv[optind][0] == '+'
! 461: #endif /* GETOPT_COMPAT */
! 462: ))
! 463: {
! 464: const struct option *p;
! 465: char *s = nextchar;
! 466: int exact = 0;
! 467: int ambig = 0;
! 468: const struct option *pfound = NULL;
! 469: int indfound;
! 470:
! 471: while (*s && *s != '=')
! 472: s++;
! 473:
! 474: /* Test all options for either exact match or abbreviated matches. */
! 475: for (p = longopts, option_index = 0; p->name;
! 476: p++, option_index++)
! 477: if (!strncmp (p->name, nextchar, s - nextchar))
! 478: {
! 479: if (s - nextchar == strlen (p->name))
! 480: {
! 481: /* Exact match found. */
! 482: pfound = p;
! 483: indfound = option_index;
! 484: exact = 1;
! 485: break;
! 486: }
! 487: else if (pfound == NULL)
! 488: {
! 489: /* First nonexact match found. */
! 490: pfound = p;
! 491: indfound = option_index;
! 492: }
! 493: else
! 494: /* Second nonexact match found. */
! 495: ambig = 1;
! 496: }
! 497:
! 498: if (ambig && !exact)
! 499: {
! 500: if (opterr)
! 501: fprintf (stderr, "%s: option `%s' is ambiguous\n",
! 502: argv[0], argv[optind]);
! 503: nextchar += strlen (nextchar);
! 504: optind++;
! 505: return '?';
! 506: }
! 507:
! 508: if (pfound != NULL)
! 509: {
! 510: option_index = indfound;
! 511: optind++;
! 512: if (*s)
! 513: {
! 514: /* Don't test has_arg with >, because some C compilers don't
! 515: allow it to be used on enums. */
! 516: if (pfound->has_arg)
! 517: optarg = s + 1;
! 518: else
! 519: {
! 520: if (opterr)
! 521: {
! 522: if (argv[optind - 1][1] == '-')
! 523: /* --option */
! 524: fprintf (stderr,
! 525: "%s: option `--%s' doesn't allow an argument\n",
! 526: argv[0], pfound->name);
! 527: else
! 528: /* +option or -option */
! 529: fprintf (stderr,
! 530: "%s: option `%c%s' doesn't allow an argument\n",
! 531: argv[0], argv[optind - 1][0], pfound->name);
! 532: }
! 533: nextchar += strlen (nextchar);
! 534: return '?';
! 535: }
! 536: }
! 537: else if (pfound->has_arg == 1)
! 538: {
! 539: if (optind < argc)
! 540: optarg = argv[optind++];
! 541: else
! 542: {
! 543: if (opterr)
! 544: fprintf (stderr, "%s: option `%s' requires an argument\n",
! 545: argv[0], argv[optind - 1]);
! 546: nextchar += strlen (nextchar);
! 547: return optstring[0] == ':' ? ':' : '?';
! 548: }
! 549: }
! 550: nextchar += strlen (nextchar);
! 551: if (longind != NULL)
! 552: *longind = option_index;
! 553: if (pfound->flag)
! 554: {
! 555: *(pfound->flag) = pfound->val;
! 556: return 0;
! 557: }
! 558: return pfound->val;
! 559: }
! 560: /* Can't find it as a long option. If this is not getopt_long_only,
! 561: or the option starts with '--' or is not a valid short
! 562: option, then it's an error.
! 563: Otherwise interpret it as a short option. */
! 564: if (!long_only || argv[optind][1] == '-'
! 565: #ifdef GETOPT_COMPAT
! 566: || argv[optind][0] == '+'
! 567: #endif /* GETOPT_COMPAT */
! 568: || my_index (optstring, *nextchar) == NULL)
! 569: {
! 570: if (opterr)
! 571: {
! 572: if (argv[optind][1] == '-')
! 573: /* --option */
! 574: fprintf (stderr, "%s: unrecognized option `--%s'\n",
! 575: argv[0], nextchar);
! 576: else
! 577: /* +option or -option */
! 578: fprintf (stderr, "%s: unrecognized option `%c%s'\n",
! 579: argv[0], argv[optind][0], nextchar);
! 580: }
! 581: nextchar = (char *) "";
! 582: optind++;
! 583: return '?';
! 584: }
! 585: }
! 586:
! 587: /* Look at and handle the next option-character. */
! 588:
! 589: {
! 590: char c = *nextchar++;
! 591: char *temp = my_index (optstring, c);
! 592:
! 593: /* Increment `optind' when we start to process its last character. */
! 594: if (*nextchar == '\0')
! 595: ++optind;
! 596:
! 597: optopt = c;
! 598:
! 599: if (temp == NULL || c == ':')
! 600: {
! 601: if (opterr)
! 602: {
! 603: #if 0
! 604: if (c < 040 || c >= 0177)
! 605: fprintf (stderr, "%s: unrecognized option, character code 0%o\n",
! 606: argv[0], c);
! 607: else
! 608: fprintf (stderr, "%s: unrecognized option `-%c'\n", argv[0], c);
! 609: #else
! 610: /* 1003.2 specifies the format of this message. */
! 611: fprintf (stderr, "%s: illegal option -- %c\n", argv[0], c);
! 612: #endif
! 613: }
! 614: optopt = c;
! 615: return '?';
! 616: }
! 617: if (temp[1] == ':')
! 618: {
! 619: if (temp[2] == ':')
! 620: {
! 621: /* This is an option that accepts an argument optionally. */
! 622: if (*nextchar != '\0')
! 623: {
! 624: optarg = nextchar;
! 625: optind++;
! 626: }
! 627: else
! 628: optarg = 0;
! 629: nextchar = NULL;
! 630: }
! 631: else
! 632: {
! 633: /* This is an option that requires an argument. */
! 634: if (*nextchar != '\0')
! 635: {
! 636: optarg = nextchar;
! 637: /* If we end this ARGV-element by taking the rest as an arg,
! 638: we must advance to the next element now. */
! 639: optind++;
! 640: }
! 641: else if (optind == argc)
! 642: {
! 643: if (opterr)
! 644: {
! 645: #if 0
! 646: fprintf (stderr, "%s: option `-%c' requires an argument\n",
! 647: argv[0], c);
! 648: #else
! 649: /* 1003.2 specifies the format of this message. */
! 650: fprintf (stderr, "%s: option requires an argument -- %c\n",
! 651: argv[0], c);
! 652: #endif
! 653: }
! 654: optopt = c;
! 655: if (optstring[0] == ':')
! 656: c = ':';
! 657: else
! 658: c = '?';
! 659: }
! 660: else
! 661: /* We already incremented `optind' once;
! 662: increment it again when taking next ARGV-elt as argument. */
! 663: optarg = argv[optind++];
! 664: nextchar = NULL;
! 665: }
! 666: }
! 667: return c;
! 668: }
! 669: }
! 670:
! 671: int
! 672: getopt (argc, argv, optstring)
! 673: int argc;
! 674: char *const *argv;
! 675: const char *optstring;
! 676: {
! 677: return _getopt_internal (argc, argv, optstring,
! 678: (const struct option *) 0,
! 679: (int *) 0,
! 680: 0);
! 681: }
! 682:
! 683: #endif /* _LIBC or not __GNU_LIBRARY__. */
! 684:
! 685: #ifdef TEST
! 686:
! 687: /* Compile with -DTEST to make an executable for use in testing
! 688: the above definition of `getopt'. */
! 689:
! 690: int
! 691: main (argc, argv)
! 692: int argc;
! 693: char **argv;
! 694: {
! 695: int c;
! 696: int digit_optind = 0;
! 697:
! 698: while (1)
! 699: {
! 700: int this_option_optind = optind ? optind : 1;
! 701:
! 702: c = getopt (argc, argv, "abc:d:0123456789");
! 703: if (c == EOF)
! 704: break;
! 705:
! 706: switch (c)
! 707: {
! 708: case '0':
! 709: case '1':
! 710: case '2':
! 711: case '3':
! 712: case '4':
! 713: case '5':
! 714: case '6':
! 715: case '7':
! 716: case '8':
! 717: case '9':
! 718: if (digit_optind != 0 && digit_optind != this_option_optind)
! 719: printf ("digits occur in two different argv-elements.\n");
! 720: digit_optind = this_option_optind;
! 721: printf ("option %c\n", c);
! 722: break;
! 723:
! 724: case 'a':
! 725: printf ("option a\n");
! 726: break;
! 727:
! 728: case 'b':
! 729: printf ("option b\n");
! 730: break;
! 731:
! 732: case 'c':
! 733: printf ("option c with value `%s'\n", optarg);
! 734: break;
! 735:
! 736: case '?':
! 737: break;
! 738:
! 739: default:
! 740: printf ("?? getopt returned character code 0%o ??\n", c);
! 741: }
! 742: }
! 743:
! 744: if (optind < argc)
! 745: {
! 746: printf ("non-option ARGV-elements: ");
! 747: while (optind < argc)
! 748: printf ("%s ", argv[optind++]);
! 749: printf ("\n");
! 750: }
! 751:
! 752: exit (0);
! 753: }
! 754:
! 755: #endif /* TEST */
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>