Annotation of embedaddon/lrzsz/lib/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:
! 43: /* Comment out all this code if we are using the GNU C Library, and are not
! 44: actually compiling the library itself. This code is part of the GNU C
! 45: Library, but also included in many other GNU distributions. Compiling
! 46: and linking in this code is a waste when using the GNU C library
! 47: (especially if it is a shared library). Rather than having every GNU
! 48: program understand `configure --with-gnu-libc' and omit the object files,
! 49: it is simpler to just do this in the source for each such file. */
! 50:
! 51: #if defined (_LIBC) || !defined (__GNU_LIBRARY__)
! 52:
! 53:
! 54: /* This needs to come after some library #include
! 55: to get __GNU_LIBRARY__ defined. */
! 56: #ifdef __GNU_LIBRARY__
! 57: /* Don't include stdlib.h for non-GNU C libraries because some of them
! 58: contain conflicting prototypes for getopt. */
! 59: #include <stdlib.h>
! 60: #endif /* GNU C library. */
! 61:
! 62: #ifndef _
! 63: /* This is for other GNU distributions with internationalized messages.
! 64: When compiling libc, the _ macro is predefined. */
! 65: #ifdef HAVE_LIBINTL_H
! 66: # include <libintl.h>
! 67: # define _(msgid) gettext (msgid)
! 68: #else
! 69: # define _(msgid) (msgid)
! 70: #endif
! 71: #endif
! 72:
! 73: /* This version of `getopt' appears to the caller like standard Unix `getopt'
! 74: but it behaves differently for the user, since it allows the user
! 75: to intersperse the options with the other arguments.
! 76:
! 77: As `getopt' works, it permutes the elements of ARGV so that,
! 78: when it is done, all the options precede everything else. Thus
! 79: all application programs are extended to handle flexible argument order.
! 80:
! 81: Setting the environment variable POSIXLY_CORRECT disables permutation.
! 82: Then the behavior is completely standard.
! 83:
! 84: GNU application programs can use a third alternative mode in which
! 85: they can distinguish the relative order of options and other arguments. */
! 86:
! 87: #include "getopt.h"
! 88:
! 89: /* For communication from `getopt' to the caller.
! 90: When `getopt' finds an option that takes an argument,
! 91: the argument value is returned here.
! 92: Also, when `ordering' is RETURN_IN_ORDER,
! 93: each non-option ARGV-element is returned here. */
! 94:
! 95: char *optarg = NULL;
! 96:
! 97: /* Index in ARGV of the next element to be scanned.
! 98: This is used for communication to and from the caller
! 99: and for communication between successive calls to `getopt'.
! 100:
! 101: On entry to `getopt', zero means this is the first call; initialize.
! 102:
! 103: When `getopt' returns EOF, this is the index of the first of the
! 104: non-option elements that the caller should itself scan.
! 105:
! 106: Otherwise, `optind' communicates from one call to the next
! 107: how much of ARGV has been scanned so far. */
! 108:
! 109: /* XXX 1003.2 says this must be 1 before any call. */
! 110: int optind = 0;
! 111:
! 112: /* The next char to be scanned in the option-element
! 113: in which the last option character we returned was found.
! 114: This allows us to pick up the scan where we left off.
! 115:
! 116: If this is zero, or a null string, it means resume the scan
! 117: by advancing to the next ARGV-element. */
! 118:
! 119: static char *nextchar;
! 120:
! 121: /* Callers store zero here to inhibit the error message
! 122: for unrecognized options. */
! 123:
! 124: int opterr = 1;
! 125:
! 126: /* Set to an option character which was unrecognized.
! 127: This must be initialized on some systems to avoid linking in the
! 128: system's own getopt implementation. */
! 129:
! 130: int optopt = '?';
! 131:
! 132: /* Describe how to deal with options that follow non-option ARGV-elements.
! 133:
! 134: If the caller did not specify anything,
! 135: the default is REQUIRE_ORDER if the environment variable
! 136: POSIXLY_CORRECT is defined, PERMUTE otherwise.
! 137:
! 138: REQUIRE_ORDER means don't recognize them as options;
! 139: stop option processing when the first non-option is seen.
! 140: This is what Unix does.
! 141: This mode of operation is selected by either setting the environment
! 142: variable POSIXLY_CORRECT, or using `+' as the first character
! 143: of the list of option characters.
! 144:
! 145: PERMUTE is the default. We permute the contents of ARGV as we scan,
! 146: so that eventually all the non-options are at the end. This allows options
! 147: to be given in any order, even with programs that were not written to
! 148: expect this.
! 149:
! 150: RETURN_IN_ORDER is an option available to programs that were written
! 151: to expect options and other ARGV-elements in any order and that care about
! 152: the ordering of the two. We describe each non-option ARGV-element
! 153: as if it were the argument of an option with character code 1.
! 154: Using `-' as the first character of the list of option characters
! 155: selects this mode of operation.
! 156:
! 157: The special argument `--' forces an end of option-scanning regardless
! 158: of the value of `ordering'. In the case of RETURN_IN_ORDER, only
! 159: `--' can cause `getopt' to return EOF with `optind' != ARGC. */
! 160:
! 161: static enum
! 162: {
! 163: REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER
! 164: } ordering;
! 165:
! 166: /* Value of POSIXLY_CORRECT environment variable. */
! 167: static char *posixly_correct;
! 168:
! 169: #ifdef __GNU_LIBRARY__
! 170: /* We want to avoid inclusion of string.h with non-GNU libraries
! 171: because there are many ways it can cause trouble.
! 172: On some systems, it contains special magic macros that don't work
! 173: in GCC. */
! 174: #include <string.h>
! 175: #define my_index strchr
! 176: #else
! 177:
! 178: /* Avoid depending on library functions or files
! 179: whose names are inconsistent. */
! 180:
! 181: char *getenv ();
! 182:
! 183: static char *
! 184: my_index (str, chr)
! 185: const char *str;
! 186: int chr;
! 187: {
! 188: while (*str)
! 189: {
! 190: if (*str == chr)
! 191: return (char *) str;
! 192: str++;
! 193: }
! 194: return 0;
! 195: }
! 196:
! 197: /* If using GCC, we can safely declare strlen this way.
! 198: If not using GCC, it is ok not to declare it. */
! 199: #ifdef __GNUC__
! 200: /* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h.
! 201: That was relevant to code that was here before. */
! 202: #if !defined (__STDC__) || !__STDC__
! 203: /* gcc with -traditional declares the built-in strlen to return int,
! 204: and has done so at least since version 2.4.5. -- rms. */
! 205: extern int strlen (const char *);
! 206: #endif /* not __STDC__ */
! 207: #endif /* __GNUC__ */
! 208:
! 209: #endif /* not __GNU_LIBRARY__ */
! 210:
! 211: /* Handle permutation of arguments. */
! 212:
! 213: /* Describe the part of ARGV that contains non-options that have
! 214: been skipped. `first_nonopt' is the index in ARGV of the first of them;
! 215: `last_nonopt' is the index after the last of them. */
! 216:
! 217: static int first_nonopt;
! 218: static int last_nonopt;
! 219:
! 220: /* Exchange two adjacent subsequences of ARGV.
! 221: One subsequence is elements [first_nonopt,last_nonopt)
! 222: which contains all the non-options that have been skipped so far.
! 223: The other is elements [last_nonopt,optind), which contains all
! 224: the options processed since those non-options were skipped.
! 225:
! 226: `first_nonopt' and `last_nonopt' are relocated so that they describe
! 227: the new indices of the non-options in ARGV after they are moved. */
! 228:
! 229: static void
! 230: exchange (argv)
! 231: char **argv;
! 232: {
! 233: int bottom = first_nonopt;
! 234: int middle = last_nonopt;
! 235: int top = optind;
! 236: char *tem;
! 237:
! 238: /* Exchange the shorter segment with the far end of the longer segment.
! 239: That puts the shorter segment into the right place.
! 240: It leaves the longer segment in the right place overall,
! 241: but it consists of two parts that need to be swapped next. */
! 242:
! 243: while (top > middle && middle > bottom)
! 244: {
! 245: if (top - middle > middle - bottom)
! 246: {
! 247: /* Bottom segment is the short one. */
! 248: int len = middle - bottom;
! 249: register int i;
! 250:
! 251: /* Swap it with the top part of the top segment. */
! 252: for (i = 0; i < len; i++)
! 253: {
! 254: tem = argv[bottom + i];
! 255: argv[bottom + i] = argv[top - (middle - bottom) + i];
! 256: argv[top - (middle - bottom) + i] = tem;
! 257: }
! 258: /* Exclude the moved bottom segment from further swapping. */
! 259: top -= len;
! 260: }
! 261: else
! 262: {
! 263: /* Top segment is the short one. */
! 264: int len = top - middle;
! 265: register int i;
! 266:
! 267: /* Swap it with the bottom part of the bottom segment. */
! 268: for (i = 0; i < len; i++)
! 269: {
! 270: tem = argv[bottom + i];
! 271: argv[bottom + i] = argv[middle + i];
! 272: argv[middle + i] = tem;
! 273: }
! 274: /* Exclude the moved top segment from further swapping. */
! 275: bottom += len;
! 276: }
! 277: }
! 278:
! 279: /* Update records for the slots the non-options now occupy. */
! 280:
! 281: first_nonopt += (optind - last_nonopt);
! 282: last_nonopt = optind;
! 283: }
! 284:
! 285: /* Initialize the internal data when the first call is made. */
! 286:
! 287: static const char *
! 288: _getopt_initialize (optstring)
! 289: const char *optstring;
! 290: {
! 291: /* Start processing options with ARGV-element 1 (since ARGV-element 0
! 292: is the program name); the sequence of previously skipped
! 293: non-option ARGV-elements is empty. */
! 294:
! 295: first_nonopt = last_nonopt = optind = 1;
! 296:
! 297: nextchar = NULL;
! 298:
! 299: posixly_correct = getenv ("POSIXLY_CORRECT");
! 300:
! 301: /* Determine how to handle the ordering of options and nonoptions. */
! 302:
! 303: if (optstring[0] == '-')
! 304: {
! 305: ordering = RETURN_IN_ORDER;
! 306: ++optstring;
! 307: }
! 308: else if (optstring[0] == '+')
! 309: {
! 310: ordering = REQUIRE_ORDER;
! 311: ++optstring;
! 312: }
! 313: else if (posixly_correct != NULL)
! 314: ordering = REQUIRE_ORDER;
! 315: else
! 316: ordering = PERMUTE;
! 317:
! 318: return optstring;
! 319: }
! 320:
! 321: /* Scan elements of ARGV (whose length is ARGC) for option characters
! 322: given in OPTSTRING.
! 323:
! 324: If an element of ARGV starts with '-', and is not exactly "-" or "--",
! 325: then it is an option element. The characters of this element
! 326: (aside from the initial '-') are option characters. If `getopt'
! 327: is called repeatedly, it returns successively each of the option characters
! 328: from each of the option elements.
! 329:
! 330: If `getopt' finds another option character, it returns that character,
! 331: updating `optind' and `nextchar' so that the next call to `getopt' can
! 332: resume the scan with the following option character or ARGV-element.
! 333:
! 334: If there are no more option characters, `getopt' returns `EOF'.
! 335: Then `optind' is the index in ARGV of the first ARGV-element
! 336: that is not an option. (The ARGV-elements have been permuted
! 337: so that those that are not options now come last.)
! 338:
! 339: OPTSTRING is a string containing the legitimate option characters.
! 340: If an option character is seen that is not listed in OPTSTRING,
! 341: return '?' after printing an error message. If you set `opterr' to
! 342: zero, the error message is suppressed but we still return '?'.
! 343:
! 344: If a char in OPTSTRING is followed by a colon, that means it wants an arg,
! 345: so the following text in the same ARGV-element, or the text of the following
! 346: ARGV-element, is returned in `optarg'. Two colons mean an option that
! 347: wants an optional arg; if there is text in the current ARGV-element,
! 348: it is returned in `optarg', otherwise `optarg' is set to zero.
! 349:
! 350: If OPTSTRING starts with `-' or `+', it requests different methods of
! 351: handling the non-option ARGV-elements.
! 352: See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above.
! 353:
! 354: Long-named options begin with `--' instead of `-'.
! 355: Their names may be abbreviated as long as the abbreviation is unique
! 356: or is an exact match for some defined option. If they have an
! 357: argument, it follows the option name in the same ARGV-element, separated
! 358: from the option name by a `=', or else the in next ARGV-element.
! 359: When `getopt' finds a long-named option, it returns 0 if that option's
! 360: `flag' field is nonzero, the value of the option's `val' field
! 361: if the `flag' field is zero.
! 362:
! 363: The elements of ARGV aren't really const, because we permute them.
! 364: But we pretend they're const in the prototype to be compatible
! 365: with other systems.
! 366:
! 367: LONGOPTS is a vector of `struct option' terminated by an
! 368: element containing a name which is zero.
! 369:
! 370: LONGIND returns the index in LONGOPT of the long-named option found.
! 371: It is only valid when a long-named option has been found by the most
! 372: recent call.
! 373:
! 374: If LONG_ONLY is nonzero, '-' as well as '--' can introduce
! 375: long-named options. */
! 376:
! 377: int
! 378: _getopt_internal (argc, argv, optstring, longopts, longind, long_only)
! 379: int argc;
! 380: char *const *argv;
! 381: const char *optstring;
! 382: const struct option *longopts;
! 383: int *longind;
! 384: int long_only;
! 385: {
! 386: optarg = NULL;
! 387:
! 388: if (optind == 0)
! 389: {
! 390: optstring = _getopt_initialize (optstring);
! 391: optind = 1; /* Don't scan ARGV[0], the program name. */
! 392: }
! 393:
! 394: if (nextchar == NULL || *nextchar == '\0')
! 395: {
! 396: /* Advance to the next ARGV-element. */
! 397:
! 398: if (ordering == PERMUTE)
! 399: {
! 400: /* If we have just processed some options following some non-options,
! 401: exchange them so that the options come first. */
! 402:
! 403: if (first_nonopt != last_nonopt && last_nonopt != optind)
! 404: exchange ((char **) argv);
! 405: else if (last_nonopt != optind)
! 406: first_nonopt = optind;
! 407:
! 408: /* Skip any additional non-options
! 409: and extend the range of non-options previously skipped. */
! 410:
! 411: while (optind < argc
! 412: && (argv[optind][0] != '-' || argv[optind][1] == '\0'))
! 413: optind++;
! 414: last_nonopt = optind;
! 415: }
! 416:
! 417: /* The special ARGV-element `--' means premature end of options.
! 418: Skip it like a null option,
! 419: then exchange with previous non-options as if it were an option,
! 420: then skip everything else like a non-option. */
! 421:
! 422: if (optind != argc && !strcmp (argv[optind], "--"))
! 423: {
! 424: optind++;
! 425:
! 426: if (first_nonopt != last_nonopt && last_nonopt != optind)
! 427: exchange ((char **) argv);
! 428: else if (first_nonopt == last_nonopt)
! 429: first_nonopt = optind;
! 430: last_nonopt = argc;
! 431:
! 432: optind = argc;
! 433: }
! 434:
! 435: /* If we have done all the ARGV-elements, stop the scan
! 436: and back over any non-options that we skipped and permuted. */
! 437:
! 438: if (optind == argc)
! 439: {
! 440: /* Set the next-arg-index to point at the non-options
! 441: that we previously skipped, so the caller will digest them. */
! 442: if (first_nonopt != last_nonopt)
! 443: optind = first_nonopt;
! 444: return EOF;
! 445: }
! 446:
! 447: /* If we have come to a non-option and did not permute it,
! 448: either stop the scan or describe it to the caller and pass it by. */
! 449:
! 450: if ((argv[optind][0] != '-' || argv[optind][1] == '\0'))
! 451: {
! 452: if (ordering == REQUIRE_ORDER)
! 453: return EOF;
! 454: optarg = argv[optind++];
! 455: return 1;
! 456: }
! 457:
! 458: /* We have found another option-ARGV-element.
! 459: Skip the initial punctuation. */
! 460:
! 461: nextchar = (argv[optind] + 1
! 462: + (longopts != NULL && argv[optind][1] == '-'));
! 463: }
! 464:
! 465: /* Decode the current option-ARGV-element. */
! 466:
! 467: /* Check whether the ARGV-element is a long option.
! 468:
! 469: If long_only and the ARGV-element has the form "-f", where f is
! 470: a valid short option, don't consider it an abbreviated form of
! 471: a long option that starts with f. Otherwise there would be no
! 472: way to give the -f short option.
! 473:
! 474: On the other hand, if there's a long option "fubar" and
! 475: the ARGV-element is "-fu", do consider that an abbreviation of
! 476: the long option, just like "--fu", and not "-f" with arg "u".
! 477:
! 478: This distinction seems to be the most useful approach. */
! 479:
! 480: if (longopts != NULL
! 481: && (argv[optind][1] == '-'
! 482: || (long_only && (argv[optind][2]
! 483: || !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;
! 491: int option_index;
! 492:
! 493: for (nameend = nextchar; *nameend && *nameend != '='; nameend++)
! 494: /* Do nothing. */ ;
! 495:
! 496: #ifdef lint
! 497: indfound = 0; /* Avoid spurious compiler warning. */
! 498: #endif
! 499:
! 500: /* Test all long options for either exact match
! 501: or abbreviated matches. */
! 502: for (p = longopts, option_index = 0; p->name; p++, option_index++)
! 503: if (!strncmp (p->name, nextchar, nameend - nextchar))
! 504: {
! 505: if (nameend - nextchar == strlen (p->name))
! 506: {
! 507: /* Exact match found. */
! 508: pfound = p;
! 509: indfound = option_index;
! 510: exact = 1;
! 511: break;
! 512: }
! 513: else if (pfound == NULL)
! 514: {
! 515: /* First nonexact match found. */
! 516: pfound = p;
! 517: indfound = option_index;
! 518: }
! 519: else
! 520: /* Second or later nonexact match found. */
! 521: ambig = 1;
! 522: }
! 523:
! 524: if (ambig && !exact)
! 525: {
! 526: if (opterr)
! 527: fprintf (stderr, _("%s: option `%s' is ambiguous\n"),
! 528: argv[0], argv[optind]);
! 529: nextchar += strlen (nextchar);
! 530: optind++;
! 531: return '?';
! 532: }
! 533:
! 534: if (pfound != NULL)
! 535: {
! 536: option_index = indfound;
! 537: optind++;
! 538: if (*nameend)
! 539: {
! 540: /* Don't test has_arg with >, because some C compilers don't
! 541: allow it to be used on enums. */
! 542: if (pfound->has_arg)
! 543: optarg = nameend + 1;
! 544: else
! 545: {
! 546: if (opterr)
! 547: if (argv[optind - 1][1] == '-')
! 548: /* --option */
! 549: fprintf (stderr,
! 550: _("%s: option `--%s' doesn't allow an argument\n"),
! 551: argv[0], pfound->name);
! 552: else
! 553: /* +option or -option */
! 554: fprintf (stderr,
! 555: _("%s: option `%c%s' doesn't allow an argument\n"),
! 556: argv[0], argv[optind - 1][0], pfound->name);
! 557:
! 558: nextchar += strlen (nextchar);
! 559: return '?';
! 560: }
! 561: }
! 562: else if (pfound->has_arg == 1)
! 563: {
! 564: if (optind < argc)
! 565: optarg = argv[optind++];
! 566: else
! 567: {
! 568: if (opterr)
! 569: fprintf (stderr,
! 570: _("%s: option `%s' requires an argument\n"),
! 571: argv[0], argv[optind - 1]);
! 572: nextchar += strlen (nextchar);
! 573: return optstring[0] == ':' ? ':' : '?';
! 574: }
! 575: }
! 576: nextchar += strlen (nextchar);
! 577: if (longind != NULL)
! 578: *longind = option_index;
! 579: if (pfound->flag)
! 580: {
! 581: *(pfound->flag) = pfound->val;
! 582: return 0;
! 583: }
! 584: return pfound->val;
! 585: }
! 586:
! 587: /* Can't find it as a long option. If this is not getopt_long_only,
! 588: or the option starts with '--' or is not a valid short
! 589: option, then it's an error.
! 590: Otherwise interpret it as a short option. */
! 591: if (!long_only || argv[optind][1] == '-'
! 592: || my_index (optstring, *nextchar) == NULL)
! 593: {
! 594: if (opterr)
! 595: {
! 596: if (argv[optind][1] == '-')
! 597: /* --option */
! 598: fprintf (stderr, _("%s: unrecognized option `--%s'\n"),
! 599: argv[0], nextchar);
! 600: else
! 601: /* +option or -option */
! 602: fprintf (stderr, _("%s: unrecognized option `%c%s'\n"),
! 603: argv[0], argv[optind][0], nextchar);
! 604: }
! 605: nextchar = (char *) "";
! 606: optind++;
! 607: return '?';
! 608: }
! 609: }
! 610:
! 611: /* Look at and handle the next short option-character. */
! 612:
! 613: {
! 614: char c = *nextchar++;
! 615: char *temp = my_index (optstring, c);
! 616:
! 617: /* Increment `optind' when we start to process its last character. */
! 618: if (*nextchar == '\0')
! 619: ++optind;
! 620:
! 621: if (temp == NULL || c == ':')
! 622: {
! 623: if (opterr)
! 624: {
! 625: if (posixly_correct)
! 626: /* 1003.2 specifies the format of this message. */
! 627: fprintf (stderr, _("%s: illegal option -- %c\n"),
! 628: argv[0], c);
! 629: else
! 630: fprintf (stderr, _("%s: invalid option -- %c\n"),
! 631: argv[0], c);
! 632: }
! 633: optopt = c;
! 634: return '?';
! 635: }
! 636: if (temp[1] == ':')
! 637: {
! 638: if (temp[2] == ':')
! 639: {
! 640: /* This is an option that accepts an argument optionally. */
! 641: if (*nextchar != '\0')
! 642: {
! 643: optarg = nextchar;
! 644: optind++;
! 645: }
! 646: else
! 647: optarg = NULL;
! 648: nextchar = NULL;
! 649: }
! 650: else
! 651: {
! 652: /* This is an option that requires an argument. */
! 653: if (*nextchar != '\0')
! 654: {
! 655: optarg = nextchar;
! 656: /* If we end this ARGV-element by taking the rest as an arg,
! 657: we must advance to the next element now. */
! 658: optind++;
! 659: }
! 660: else if (optind == argc)
! 661: {
! 662: if (opterr)
! 663: {
! 664: /* 1003.2 specifies the format of this message. */
! 665: fprintf (stderr,
! 666: _("%s: option requires an argument -- %c\n"),
! 667: argv[0], c);
! 668: }
! 669: optopt = c;
! 670: if (optstring[0] == ':')
! 671: c = ':';
! 672: else
! 673: c = '?';
! 674: }
! 675: else
! 676: /* We already incremented `optind' once;
! 677: increment it again when taking next ARGV-elt as argument. */
! 678: optarg = argv[optind++];
! 679: nextchar = NULL;
! 680: }
! 681: }
! 682: return c;
! 683: }
! 684: }
! 685:
! 686: int
! 687: getopt (argc, argv, optstring)
! 688: int argc;
! 689: char *const *argv;
! 690: const char *optstring;
! 691: {
! 692: return _getopt_internal (argc, argv, optstring,
! 693: (const struct option *) 0,
! 694: (int *) 0,
! 695: 0);
! 696: }
! 697:
! 698: #endif /* _LIBC or not __GNU_LIBRARY__. */
! 699:
! 700: #ifdef TEST
! 701:
! 702: /* Compile with -DTEST to make an executable for use in testing
! 703: the above definition of `getopt'. */
! 704:
! 705: int
! 706: main (argc, argv)
! 707: int argc;
! 708: char **argv;
! 709: {
! 710: int c;
! 711: int digit_optind = 0;
! 712:
! 713: while (1)
! 714: {
! 715: int this_option_optind = optind ? optind : 1;
! 716:
! 717: c = getopt (argc, argv, "abc:d:0123456789");
! 718: if (c == EOF)
! 719: break;
! 720:
! 721: switch (c)
! 722: {
! 723: case '0':
! 724: case '1':
! 725: case '2':
! 726: case '3':
! 727: case '4':
! 728: case '5':
! 729: case '6':
! 730: case '7':
! 731: case '8':
! 732: case '9':
! 733: if (digit_optind != 0 && digit_optind != this_option_optind)
! 734: printf ("digits occur in two different argv-elements.\n");
! 735: digit_optind = this_option_optind;
! 736: printf ("option %c\n", c);
! 737: break;
! 738:
! 739: case 'a':
! 740: printf ("option a\n");
! 741: break;
! 742:
! 743: case 'b':
! 744: printf ("option b\n");
! 745: break;
! 746:
! 747: case 'c':
! 748: printf ("option c with value `%s'\n", optarg);
! 749: break;
! 750:
! 751: case '?':
! 752: break;
! 753:
! 754: default:
! 755: printf ("?? getopt returned character code 0%o ??\n", c);
! 756: }
! 757: }
! 758:
! 759: if (optind < argc)
! 760: {
! 761: printf ("non-option ARGV-elements: ");
! 762: while (optind < argc)
! 763: printf ("%s ", argv[optind++]);
! 764: printf ("\n");
! 765: }
! 766:
! 767: exit (0);
! 768: }
! 769:
! 770: #endif /* TEST */
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