Annotation of embedaddon/mtr/getopt.c, revision 1.1
1.1 ! misho 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, 93, 94, 95
! 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: /* This tells Alpha OSF/1 not to define a getopt prototype in <stdio.h>.
! 24: Ditto for AIX 3.2 and <stdlib.h>. */
! 25: #ifndef _NO_PROTO
! 26: #define _NO_PROTO
! 27: #endif
! 28:
! 29: #ifdef HAVE_CONFIG_H
! 30: #include <config.h>
! 31: #endif
! 32:
! 33: #if !defined (__STDC__) || !__STDC__
! 34: /* This is a separate conditional since some stdc systems
! 35: reject `defined (const)'. */
! 36: #ifndef const
! 37: #define const
! 38: #endif
! 39: #endif
! 40:
! 41: #include <stdio.h>
! 42: #include <string.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: #if defined (_LIBC) || !defined (__GNU_LIBRARY__)
! 53:
! 54:
! 55: /* This needs to come after some library #include
! 56: to get __GNU_LIBRARY__ defined. */
! 57: #ifdef __GNU_LIBRARY__
! 58: /* Don't include stdlib.h for non-GNU C libraries because some of them
! 59: contain conflicting prototypes for getopt. */
! 60: #include <stdlib.h>
! 61: #endif /* GNU C library. */
! 62:
! 63: #ifndef _
! 64: /* This is for other GNU distributions with internationalized messages.
! 65: When compiling libc, the _ macro is predefined. */
! 66: #ifdef HAVE_LIBINTL_H
! 67: # include <libintl.h>
! 68: # define _(msgid) gettext (msgid)
! 69: #else
! 70: # define _(msgid) (msgid)
! 71: #endif
! 72: #endif
! 73:
! 74: /* This version of `getopt' appears to the caller like standard Unix `getopt'
! 75: but it behaves differently for the user, since it allows the user
! 76: to intersperse the options with the other arguments.
! 77:
! 78: As `getopt' works, it permutes the elements of ARGV so that,
! 79: when it is done, all the options precede everything else. Thus
! 80: all application programs are extended to handle flexible argument order.
! 81:
! 82: Setting the environment variable POSIXLY_CORRECT disables permutation.
! 83: Then the behavior is completely standard.
! 84:
! 85: GNU application programs can use a third alternative mode in which
! 86: they can distinguish the relative order of options and other arguments. */
! 87:
! 88: #include "getopt.h"
! 89:
! 90: /* For communication from `getopt' to the caller.
! 91: When `getopt' finds an option that takes an argument,
! 92: the argument value is returned here.
! 93: Also, when `ordering' is RETURN_IN_ORDER,
! 94: each non-option ARGV-element is returned here. */
! 95:
! 96: char *optarg = NULL;
! 97:
! 98: /* Index in ARGV of the next element to be scanned.
! 99: This is used for communication to and from the caller
! 100: and for communication between successive calls to `getopt'.
! 101:
! 102: On entry to `getopt', zero means this is the first call; initialize.
! 103:
! 104: When `getopt' returns EOF, this is the index of the first of the
! 105: non-option elements that the caller should itself scan.
! 106:
! 107: Otherwise, `optind' communicates from one call to the next
! 108: how much of ARGV has been scanned so far. */
! 109:
! 110: /* XXX 1003.2 says this must be 1 before any call. */
! 111: int optind = 0;
! 112:
! 113: /* The next char to be scanned in the option-element
! 114: in which the last option character we returned was found.
! 115: This allows us to pick up the scan where we left off.
! 116:
! 117: If this is zero, or a null string, it means resume the scan
! 118: by advancing to the next ARGV-element. */
! 119:
! 120: static char *nextchar;
! 121:
! 122: /* Callers store zero here to inhibit the error message
! 123: for unrecognized options. */
! 124:
! 125: int opterr = 1;
! 126:
! 127: /* Set to an option character which was unrecognized.
! 128: This must be initialized on some systems to avoid linking in the
! 129: system's own getopt implementation. */
! 130:
! 131: int optopt = '?';
! 132:
! 133: /* Describe how to deal with options that follow non-option ARGV-elements.
! 134:
! 135: If the caller did not specify anything,
! 136: the default is REQUIRE_ORDER if the environment variable
! 137: POSIXLY_CORRECT is defined, PERMUTE otherwise.
! 138:
! 139: REQUIRE_ORDER means don't recognize them as options;
! 140: stop option processing when the first non-option is seen.
! 141: This is what Unix does.
! 142: This mode of operation is selected by either setting the environment
! 143: variable POSIXLY_CORRECT, or using `+' as the first character
! 144: of the list of option characters.
! 145:
! 146: PERMUTE is the default. We permute the contents of ARGV as we scan,
! 147: so that eventually all the non-options are at the end. This allows options
! 148: to be given in any order, even with programs that were not written to
! 149: expect this.
! 150:
! 151: RETURN_IN_ORDER is an option available to programs that were written
! 152: to expect options and other ARGV-elements in any order and that care about
! 153: the ordering of the two. We describe each non-option ARGV-element
! 154: as if it were the argument of an option with character code 1.
! 155: Using `-' as the first character of the list of option characters
! 156: selects this mode of operation.
! 157:
! 158: The special argument `--' forces an end of option-scanning regardless
! 159: of the value of `ordering'. In the case of RETURN_IN_ORDER, only
! 160: `--' can cause `getopt' to return EOF with `optind' != ARGC. */
! 161:
! 162: static enum
! 163: {
! 164: REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER
! 165: } ordering;
! 166:
! 167: /* Value of POSIXLY_CORRECT environment variable. */
! 168: static char *posixly_correct;
! 169:
! 170: #ifdef __GNU_LIBRARY__
! 171: /* We want to avoid inclusion of string.h with non-GNU libraries
! 172: because there are many ways it can cause trouble.
! 173: On some systems, it contains special magic macros that don't work
! 174: in GCC. */
! 175: #include <string.h>
! 176: #define my_index strchr
! 177: #else
! 178:
! 179: /* Avoid depending on library functions or files
! 180: whose names are inconsistent. */
! 181:
! 182: char *getenv ();
! 183:
! 184: static char *
! 185: my_index (str, chr)
! 186: const char *str;
! 187: int chr;
! 188: {
! 189: while (*str)
! 190: {
! 191: if (*str == chr)
! 192: return (char *) str;
! 193: str++;
! 194: }
! 195: return 0;
! 196: }
! 197:
! 198: /* If using GCC, we can safely declare strlen this way.
! 199: If not using GCC, it is ok not to declare it. */
! 200: #ifdef __GNUC__
! 201: /* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h.
! 202: That was relevant to code that was here before. */
! 203: #if !defined (__STDC__) || !__STDC__
! 204: /* gcc with -traditional declares the built-in strlen to return int,
! 205: and has done so at least since version 2.4.5. -- rms. */
! 206: extern int strlen (const char *);
! 207: #endif /* not __STDC__ */
! 208: #endif /* __GNUC__ */
! 209:
! 210: #endif /* not __GNU_LIBRARY__ */
! 211:
! 212: /* Handle permutation of arguments. */
! 213:
! 214: /* Describe the part of ARGV that contains non-options that have
! 215: been skipped. `first_nonopt' is the index in ARGV of the first of them;
! 216: `last_nonopt' is the index after the last of them. */
! 217:
! 218: static int first_nonopt;
! 219: static int last_nonopt;
! 220:
! 221: /* Exchange two adjacent subsequences of ARGV.
! 222: One subsequence is elements [first_nonopt,last_nonopt)
! 223: which contains all the non-options that have been skipped so far.
! 224: The other is elements [last_nonopt,optind), which contains all
! 225: the options processed since those non-options were skipped.
! 226:
! 227: `first_nonopt' and `last_nonopt' are relocated so that they describe
! 228: the new indices of the non-options in ARGV after they are moved. */
! 229:
! 230: static void
! 231: exchange (argv)
! 232: char **argv;
! 233: {
! 234: int bottom = first_nonopt;
! 235: int middle = last_nonopt;
! 236: int top = optind;
! 237: char *tem;
! 238:
! 239: /* Exchange the shorter segment with the far end of the longer segment.
! 240: That puts the shorter segment into the right place.
! 241: It leaves the longer segment in the right place overall,
! 242: but it consists of two parts that need to be swapped next. */
! 243:
! 244: while (top > middle && middle > bottom)
! 245: {
! 246: if (top - middle > middle - bottom)
! 247: {
! 248: /* Bottom segment is the short one. */
! 249: int len = middle - bottom;
! 250: register int i;
! 251:
! 252: /* Swap it with the top part of the top segment. */
! 253: for (i = 0; i < len; i++)
! 254: {
! 255: tem = argv[bottom + i];
! 256: argv[bottom + i] = argv[top - (middle - bottom) + i];
! 257: argv[top - (middle - bottom) + i] = tem;
! 258: }
! 259: /* Exclude the moved bottom segment from further swapping. */
! 260: top -= len;
! 261: }
! 262: else
! 263: {
! 264: /* Top segment is the short one. */
! 265: int len = top - middle;
! 266: register int i;
! 267:
! 268: /* Swap it with the bottom part of the bottom segment. */
! 269: for (i = 0; i < len; i++)
! 270: {
! 271: tem = argv[bottom + i];
! 272: argv[bottom + i] = argv[middle + i];
! 273: argv[middle + i] = tem;
! 274: }
! 275: /* Exclude the moved top segment from further swapping. */
! 276: bottom += len;
! 277: }
! 278: }
! 279:
! 280: /* Update records for the slots the non-options now occupy. */
! 281:
! 282: first_nonopt += (optind - last_nonopt);
! 283: last_nonopt = optind;
! 284: }
! 285:
! 286: /* Initialize the internal data when the first call is made. */
! 287:
! 288: static const char *
! 289: _getopt_initialize (optstring)
! 290: const char *optstring;
! 291: {
! 292: /* Start processing options with ARGV-element 1 (since ARGV-element 0
! 293: is the program name); the sequence of previously skipped
! 294: non-option ARGV-elements is empty. */
! 295:
! 296: first_nonopt = last_nonopt = optind = 1;
! 297:
! 298: nextchar = NULL;
! 299:
! 300: posixly_correct = getenv ("POSIXLY_CORRECT");
! 301:
! 302: /* Determine how to handle the ordering of options and nonoptions. */
! 303:
! 304: if (optstring[0] == '-')
! 305: {
! 306: ordering = RETURN_IN_ORDER;
! 307: ++optstring;
! 308: }
! 309: else if (optstring[0] == '+')
! 310: {
! 311: ordering = REQUIRE_ORDER;
! 312: ++optstring;
! 313: }
! 314: else if (posixly_correct != NULL)
! 315: ordering = REQUIRE_ORDER;
! 316: else
! 317: ordering = PERMUTE;
! 318:
! 319: return optstring;
! 320: }
! 321:
! 322: /* Scan elements of ARGV (whose length is ARGC) for option characters
! 323: given in OPTSTRING.
! 324:
! 325: If an element of ARGV starts with '-', and is not exactly "-" or "--",
! 326: then it is an option element. The characters of this element
! 327: (aside from the initial '-') are option characters. If `getopt'
! 328: is called repeatedly, it returns successively each of the option characters
! 329: from each of the option elements.
! 330:
! 331: If `getopt' finds another option character, it returns that character,
! 332: updating `optind' and `nextchar' so that the next call to `getopt' can
! 333: resume the scan with the following option character or ARGV-element.
! 334:
! 335: If there are no more option characters, `getopt' returns `EOF'.
! 336: Then `optind' is the index in ARGV of the first ARGV-element
! 337: that is not an option. (The ARGV-elements have been permuted
! 338: so that those that are not options now come last.)
! 339:
! 340: OPTSTRING is a string containing the legitimate option characters.
! 341: If an option character is seen that is not listed in OPTSTRING,
! 342: return '?' after printing an error message. If you set `opterr' to
! 343: zero, the error message is suppressed but we still return '?'.
! 344:
! 345: If a char in OPTSTRING is followed by a colon, that means it wants an arg,
! 346: so the following text in the same ARGV-element, or the text of the following
! 347: ARGV-element, is returned in `optarg'. Two colons mean an option that
! 348: wants an optional arg; if there is text in the current ARGV-element,
! 349: it is returned in `optarg', otherwise `optarg' is set to zero.
! 350:
! 351: If OPTSTRING starts with `-' or `+', it requests different methods of
! 352: handling the non-option ARGV-elements.
! 353: See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above.
! 354:
! 355: Long-named options begin with `--' instead of `-'.
! 356: Their names may be abbreviated as long as the abbreviation is unique
! 357: or is an exact match for some defined option. If they have an
! 358: argument, it follows the option name in the same ARGV-element, separated
! 359: from the option name by a `=', or else the in next ARGV-element.
! 360: When `getopt' finds a long-named option, it returns 0 if that option's
! 361: `flag' field is nonzero, the value of the option's `val' field
! 362: if the `flag' field is zero.
! 363:
! 364: The elements of ARGV aren't really const, because we permute them.
! 365: But we pretend they're const in the prototype to be compatible
! 366: with other systems.
! 367:
! 368: LONGOPTS is a vector of `struct option' terminated by an
! 369: element containing a name which is zero.
! 370:
! 371: LONGIND returns the index in LONGOPT of the long-named option found.
! 372: It is only valid when a long-named option has been found by the most
! 373: recent call.
! 374:
! 375: If LONG_ONLY is nonzero, '-' as well as '--' can introduce
! 376: long-named options. */
! 377:
! 378: int
! 379: _getopt_internal (argc, argv, optstring, longopts, longind, long_only)
! 380: int argc;
! 381: char *const *argv;
! 382: const char *optstring;
! 383: const struct option *longopts;
! 384: int *longind;
! 385: int long_only;
! 386: {
! 387: optarg = NULL;
! 388:
! 389: if (optind == 0)
! 390: {
! 391: optstring = _getopt_initialize (optstring);
! 392: optind = 1; /* Don't scan ARGV[0], the program name. */
! 393: }
! 394:
! 395: if (nextchar == NULL || *nextchar == '\0')
! 396: {
! 397: /* Advance to the next ARGV-element. */
! 398:
! 399: if (ordering == PERMUTE)
! 400: {
! 401: /* If we have just processed some options following some non-options,
! 402: exchange them so that the options come first. */
! 403:
! 404: if (first_nonopt != last_nonopt && last_nonopt != optind)
! 405: exchange ((char **) argv);
! 406: else if (last_nonopt != optind)
! 407: first_nonopt = optind;
! 408:
! 409: /* Skip any additional non-options
! 410: and extend the range of non-options previously skipped. */
! 411:
! 412: while (optind < argc
! 413: && (argv[optind][0] != '-' || argv[optind][1] == '\0'))
! 414: optind++;
! 415: last_nonopt = optind;
! 416: }
! 417:
! 418: /* The special ARGV-element `--' means premature end of options.
! 419: Skip it like a null option,
! 420: then exchange with previous non-options as if it were an option,
! 421: then skip everything else like a non-option. */
! 422:
! 423: if (optind != argc && !strcmp (argv[optind], "--"))
! 424: {
! 425: optind++;
! 426:
! 427: if (first_nonopt != last_nonopt && last_nonopt != optind)
! 428: exchange ((char **) argv);
! 429: else if (first_nonopt == last_nonopt)
! 430: first_nonopt = optind;
! 431: last_nonopt = argc;
! 432:
! 433: optind = argc;
! 434: }
! 435:
! 436: /* If we have done all the ARGV-elements, stop the scan
! 437: and back over any non-options that we skipped and permuted. */
! 438:
! 439: if (optind == argc)
! 440: {
! 441: /* Set the next-arg-index to point at the non-options
! 442: that we previously skipped, so the caller will digest them. */
! 443: if (first_nonopt != last_nonopt)
! 444: optind = first_nonopt;
! 445: return EOF;
! 446: }
! 447:
! 448: /* If we have come to a non-option and did not permute it,
! 449: either stop the scan or describe it to the caller and pass it by. */
! 450:
! 451: if ((argv[optind][0] != '-' || argv[optind][1] == '\0'))
! 452: {
! 453: if (ordering == REQUIRE_ORDER)
! 454: return EOF;
! 455: optarg = argv[optind++];
! 456: return 1;
! 457: }
! 458:
! 459: /* We have found another option-ARGV-element.
! 460: Skip the initial punctuation. */
! 461:
! 462: nextchar = (argv[optind] + 1
! 463: + (longopts != NULL && argv[optind][1] == '-'));
! 464: }
! 465:
! 466: /* Decode the current option-ARGV-element. */
! 467:
! 468: /* Check whether the ARGV-element is a long option.
! 469:
! 470: If long_only and the ARGV-element has the form "-f", where f is
! 471: a valid short option, don't consider it an abbreviated form of
! 472: a long option that starts with f. Otherwise there would be no
! 473: way to give the -f short option.
! 474:
! 475: On the other hand, if there's a long option "fubar" and
! 476: the ARGV-element is "-fu", do consider that an abbreviation of
! 477: the long option, just like "--fu", and not "-f" with arg "u".
! 478:
! 479: This distinction seems to be the most useful approach. */
! 480:
! 481: if (longopts != NULL
! 482: && (argv[optind][1] == '-'
! 483: || (long_only && (argv[optind][2] || !my_index (optstring, argv[optind][1])))))
! 484: {
! 485: char *nameend;
! 486: const struct option *p;
! 487: const struct option *pfound = NULL;
! 488: int exact = 0;
! 489: int ambig = 0;
! 490: int indfound = 0;
! 491: int option_index;
! 492:
! 493: for (nameend = nextchar; *nameend && *nameend != '='; nameend++)
! 494: /* Do nothing. */ ;
! 495:
! 496: /* Test all long options for either exact match
! 497: or abbreviated matches. */
! 498: for (p = longopts, option_index = 0; p->name; p++, option_index++)
! 499: if (!strncmp (p->name, nextchar, nameend - nextchar))
! 500: {
! 501: if (nameend - nextchar == strlen (p->name))
! 502: {
! 503: /* Exact match found. */
! 504: pfound = p;
! 505: indfound = option_index;
! 506: exact = 1;
! 507: break;
! 508: }
! 509: else if (pfound == NULL)
! 510: {
! 511: /* First nonexact match found. */
! 512: pfound = p;
! 513: indfound = option_index;
! 514: }
! 515: else
! 516: /* Second or later nonexact match found. */
! 517: ambig = 1;
! 518: }
! 519:
! 520: if (ambig && !exact)
! 521: {
! 522: if (opterr)
! 523: fprintf (stderr, _("%s: option `%s' is ambiguous\n"),
! 524: argv[0], argv[optind]);
! 525: nextchar += strlen (nextchar);
! 526: optind++;
! 527: return '?';
! 528: }
! 529:
! 530: if (pfound != NULL)
! 531: {
! 532: option_index = indfound;
! 533: optind++;
! 534: if (*nameend)
! 535: {
! 536: /* Don't test has_arg with >, because some C compilers don't
! 537: allow it to be used on enums. */
! 538: if (pfound->has_arg)
! 539: optarg = nameend + 1;
! 540: else
! 541: {
! 542: if (opterr) {
! 543: if (argv[optind - 1][1] == '-')
! 544: /* --option */
! 545: fprintf (stderr,
! 546: _("%s: option `--%s' doesn't allow an argument\n"),
! 547: argv[0], pfound->name);
! 548: else
! 549: /* +option or -option */
! 550: fprintf (stderr,
! 551: _("%s: option `%c%s' doesn't allow an argument\n"),
! 552: argv[0], argv[optind - 1][0], pfound->name);
! 553: }
! 554: nextchar += strlen (nextchar);
! 555: return '?';
! 556: }
! 557: }
! 558: else if (pfound->has_arg == 1)
! 559: {
! 560: if (optind < argc)
! 561: optarg = argv[optind++];
! 562: else
! 563: {
! 564: if (opterr)
! 565: fprintf (stderr,
! 566: _("%s: option `%s' requires an argument\n"),
! 567: argv[0], argv[optind - 1]);
! 568: nextchar += strlen (nextchar);
! 569: return optstring[0] == ':' ? ':' : '?';
! 570: }
! 571: }
! 572: nextchar += strlen (nextchar);
! 573: if (longind != NULL)
! 574: *longind = option_index;
! 575: if (pfound->flag)
! 576: {
! 577: *(pfound->flag) = pfound->val;
! 578: return 0;
! 579: }
! 580: return pfound->val;
! 581: }
! 582:
! 583: /* Can't find it as a long option. If this is not getopt_long_only,
! 584: or the option starts with '--' or is not a valid short
! 585: option, then it's an error.
! 586: Otherwise interpret it as a short option. */
! 587: if (!long_only || argv[optind][1] == '-'
! 588: || my_index (optstring, *nextchar) == NULL)
! 589: {
! 590: if (opterr)
! 591: {
! 592: if (argv[optind][1] == '-')
! 593: /* --option */
! 594: fprintf (stderr, _("%s: unrecognized option `--%s'\n"),
! 595: argv[0], nextchar);
! 596: else
! 597: /* +option or -option */
! 598: fprintf (stderr, _("%s: unrecognized option `%c%s'\n"),
! 599: argv[0], argv[optind][0], nextchar);
! 600: }
! 601: nextchar = (char *) "";
! 602: optind++;
! 603: return '?';
! 604: }
! 605: }
! 606:
! 607: /* Look at and handle the next short option-character. */
! 608:
! 609: {
! 610: char c = *nextchar++;
! 611: char *temp = my_index (optstring, c);
! 612:
! 613: /* Increment `optind' when we start to process its last character. */
! 614: if (*nextchar == '\0')
! 615: ++optind;
! 616:
! 617: if (temp == NULL || c == ':')
! 618: {
! 619: if (opterr)
! 620: {
! 621: if (posixly_correct)
! 622: /* 1003.2 specifies the format of this message. */
! 623: fprintf (stderr, _("%s: illegal option -- %c\n"),
! 624: argv[0], c);
! 625: else
! 626: fprintf (stderr, _("%s: invalid option -- %c\n"),
! 627: argv[0], c);
! 628: }
! 629: optopt = c;
! 630: return '?';
! 631: }
! 632: if (temp[1] == ':')
! 633: {
! 634: if (temp[2] == ':')
! 635: {
! 636: /* This is an option that accepts an argument optionally. */
! 637: if (*nextchar != '\0')
! 638: {
! 639: optarg = nextchar;
! 640: optind++;
! 641: }
! 642: else
! 643: optarg = NULL;
! 644: nextchar = NULL;
! 645: }
! 646: else
! 647: {
! 648: /* This is an option that requires an argument. */
! 649: if (*nextchar != '\0')
! 650: {
! 651: optarg = nextchar;
! 652: /* If we end this ARGV-element by taking the rest as an arg,
! 653: we must advance to the next element now. */
! 654: optind++;
! 655: }
! 656: else if (optind == argc)
! 657: {
! 658: if (opterr)
! 659: {
! 660: /* 1003.2 specifies the format of this message. */
! 661: fprintf (stderr,
! 662: _("%s: option requires an argument -- %c\n"),
! 663: argv[0], c);
! 664: }
! 665: optopt = c;
! 666: if (optstring[0] == ':')
! 667: c = ':';
! 668: else
! 669: c = '?';
! 670: }
! 671: else
! 672: /* We already incremented `optind' once;
! 673: increment it again when taking next ARGV-elt as argument. */
! 674: optarg = argv[optind++];
! 675: nextchar = NULL;
! 676: }
! 677: }
! 678: return c;
! 679: }
! 680: }
! 681:
! 682: int
! 683: getopt (argc, argv, optstring)
! 684: int argc;
! 685: char *const *argv;
! 686: const char *optstring;
! 687: {
! 688: return _getopt_internal (argc, argv, optstring,
! 689: (const struct option *) 0,
! 690: (int *) 0,
! 691: 0);
! 692: }
! 693:
! 694: #endif /* _LIBC or not __GNU_LIBRARY__. */
! 695:
! 696: #ifdef TEST
! 697:
! 698: /* Compile with -DTEST to make an executable for use in testing
! 699: the above definition of `getopt'. */
! 700:
! 701: int
! 702: main (argc, argv)
! 703: int argc;
! 704: char **argv;
! 705: {
! 706: int c;
! 707: int digit_optind = 0;
! 708:
! 709: while (1)
! 710: {
! 711: int this_option_optind = optind ? optind : 1;
! 712:
! 713: c = getopt (argc, argv, "abc:d:0123456789");
! 714: if (c == EOF)
! 715: break;
! 716:
! 717: switch (c)
! 718: {
! 719: case '0':
! 720: case '1':
! 721: case '2':
! 722: case '3':
! 723: case '4':
! 724: case '5':
! 725: case '6':
! 726: case '7':
! 727: case '8':
! 728: case '9':
! 729: if (digit_optind != 0 && digit_optind != this_option_optind)
! 730: printf ("digits occur in two different argv-elements.\n");
! 731: digit_optind = this_option_optind;
! 732: printf ("option %c\n", c);
! 733: break;
! 734:
! 735: case 'a':
! 736: printf ("option a\n");
! 737: break;
! 738:
! 739: case 'b':
! 740: printf ("option b\n");
! 741: break;
! 742:
! 743: case 'c':
! 744: printf ("option c with value `%s'\n", optarg);
! 745: break;
! 746:
! 747: case '?':
! 748: break;
! 749:
! 750: default:
! 751: printf ("?? getopt returned character code 0%o ??\n", c);
! 752: }
! 753: }
! 754:
! 755: if (optind < argc)
! 756: {
! 757: printf ("non-option ARGV-elements: ");
! 758: while (optind < argc)
! 759: printf ("%s ", argv[optind++]);
! 760: printf ("\n");
! 761: }
! 762:
! 763: exit (0);
! 764: }
! 765:
! 766: #endif /* TEST */
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