Annotation of OpenXM/src/asir-doc/jtexindex/C/getopt.c, Revision 1.1
1.1 ! noro 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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: /* This is for other GNU distributions with internationalized messages.
! 63: The GNU C Library itself does not yet support such messages. */
! 64: #if HAVE_LIBINTL_H
! 65: # include <libintl.h>
! 66: #else
! 67: # define gettext(msgid) (msgid)
! 68: #endif
! 69:
! 70: /* This version of `getopt' appears to the caller like standard Unix `getopt'
! 71: but it behaves differently for the user, since it allows the user
! 72: to intersperse the options with the other arguments.
! 73:
! 74: As `getopt' works, it permutes the elements of ARGV so that,
! 75: when it is done, all the options precede everything else. Thus
! 76: all application programs are extended to handle flexible argument order.
! 77:
! 78: Setting the environment variable POSIXLY_CORRECT disables permutation.
! 79: Then the behavior is completely standard.
! 80:
! 81: GNU application programs can use a third alternative mode in which
! 82: they can distinguish the relative order of options and other arguments. */
! 83:
! 84: #include "getopt.h"
! 85:
! 86: /* For communication from `getopt' to the caller.
! 87: When `getopt' finds an option that takes an argument,
! 88: the argument value is returned here.
! 89: Also, when `ordering' is RETURN_IN_ORDER,
! 90: each non-option ARGV-element is returned here. */
! 91:
! 92: char *optarg = NULL;
! 93:
! 94: /* Index in ARGV of the next element to be scanned.
! 95: This is used for communication to and from the caller
! 96: and for communication between successive calls to `getopt'.
! 97:
! 98: On entry to `getopt', zero means this is the first call; initialize.
! 99:
! 100: When `getopt' returns EOF, this is the index of the first of the
! 101: non-option elements that the caller should itself scan.
! 102:
! 103: Otherwise, `optind' communicates from one call to the next
! 104: how much of ARGV has been scanned so far. */
! 105:
! 106: /* XXX 1003.2 says this must be 1 before any call. */
! 107: int optind = 0;
! 108:
! 109: /* The next char to be scanned in the option-element
! 110: in which the last option character we returned was found.
! 111: This allows us to pick up the scan where we left off.
! 112:
! 113: If this is zero, or a null string, it means resume the scan
! 114: by advancing to the next ARGV-element. */
! 115:
! 116: static char *nextchar;
! 117:
! 118: /* Callers store zero here to inhibit the error message
! 119: for unrecognized options. */
! 120:
! 121: int opterr = 1;
! 122:
! 123: /* Set to an option character which was unrecognized.
! 124: This must be initialized on some systems to avoid linking in the
! 125: system's own getopt implementation. */
! 126:
! 127: int optopt = '?';
! 128:
! 129: /* Describe how to deal with options that follow non-option ARGV-elements.
! 130:
! 131: If the caller did not specify anything,
! 132: the default is REQUIRE_ORDER if the environment variable
! 133: POSIXLY_CORRECT is defined, PERMUTE otherwise.
! 134:
! 135: REQUIRE_ORDER means don't recognize them as options;
! 136: stop option processing when the first non-option is seen.
! 137: This is what Unix does.
! 138: This mode of operation is selected by either setting the environment
! 139: variable POSIXLY_CORRECT, or using `+' as the first character
! 140: of the list of option characters.
! 141:
! 142: PERMUTE is the default. We permute the contents of ARGV as we scan,
! 143: so that eventually all the non-options are at the end. This allows options
! 144: to be given in any order, even with programs that were not written to
! 145: expect this.
! 146:
! 147: RETURN_IN_ORDER is an option available to programs that were written
! 148: to expect options and other ARGV-elements in any order and that care about
! 149: the ordering of the two. We describe each non-option ARGV-element
! 150: as if it were the argument of an option with character code 1.
! 151: Using `-' as the first character of the list of option characters
! 152: selects this mode of operation.
! 153:
! 154: The special argument `--' forces an end of option-scanning regardless
! 155: of the value of `ordering'. In the case of RETURN_IN_ORDER, only
! 156: `--' can cause `getopt' to return EOF with `optind' != ARGC. */
! 157:
! 158: static enum
! 159: {
! 160: REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER
! 161: } ordering;
! 162:
! 163: /* Value of POSIXLY_CORRECT environment variable. */
! 164: static char *posixly_correct;
! 165:
! 166: #ifdef __GNU_LIBRARY__
! 167: /* We want to avoid inclusion of string.h with non-GNU libraries
! 168: because there are many ways it can cause trouble.
! 169: On some systems, it contains special magic macros that don't work
! 170: in GCC. */
! 171: #include <string.h>
! 172: #define my_index strchr
! 173: #else
! 174:
! 175: /* Avoid depending on library functions or files
! 176: whose names are inconsistent. */
! 177:
! 178: char *getenv ();
! 179:
! 180: static char *
! 181: my_index (str, chr)
! 182: const char *str;
! 183: int chr;
! 184: {
! 185: while (*str)
! 186: {
! 187: if (*str == chr)
! 188: return (char *) str;
! 189: str++;
! 190: }
! 191: return 0;
! 192: }
! 193:
! 194: /* If using GCC, we can safely declare strlen this way.
! 195: If not using GCC, it is ok not to declare it. */
! 196: #ifdef __GNUC__
! 197: /* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h.
! 198: That was relevant to code that was here before. */
! 199: #if !defined (__STDC__) || !__STDC__
! 200: /* gcc with -traditional declares the built-in strlen to return int,
! 201: and has done so at least since version 2.4.5. -- rms. */
! 202: extern int strlen (const char *);
! 203: #endif /* not __STDC__ */
! 204: #endif /* __GNUC__ */
! 205:
! 206: #endif /* not __GNU_LIBRARY__ */
! 207:
! 208: /* Handle permutation of arguments. */
! 209:
! 210: /* Describe the part of ARGV that contains non-options that have
! 211: been skipped. `first_nonopt' is the index in ARGV of the first of them;
! 212: `last_nonopt' is the index after the last of them. */
! 213:
! 214: static int first_nonopt;
! 215: static int last_nonopt;
! 216:
! 217: /* Exchange two adjacent subsequences of ARGV.
! 218: One subsequence is elements [first_nonopt,last_nonopt)
! 219: which contains all the non-options that have been skipped so far.
! 220: The other is elements [last_nonopt,optind), which contains all
! 221: the options processed since those non-options were skipped.
! 222:
! 223: `first_nonopt' and `last_nonopt' are relocated so that they describe
! 224: the new indices of the non-options in ARGV after they are moved. */
! 225:
! 226: static void
! 227: exchange (argv)
! 228: char **argv;
! 229: {
! 230: int bottom = first_nonopt;
! 231: int middle = last_nonopt;
! 232: int top = optind;
! 233: char *tem;
! 234:
! 235: /* Exchange the shorter segment with the far end of the longer segment.
! 236: That puts the shorter segment into the right place.
! 237: It leaves the longer segment in the right place overall,
! 238: but it consists of two parts that need to be swapped next. */
! 239:
! 240: while (top > middle && middle > bottom)
! 241: {
! 242: if (top - middle > middle - bottom)
! 243: {
! 244: /* Bottom segment is the short one. */
! 245: int len = middle - bottom;
! 246: register int i;
! 247:
! 248: /* Swap it with the top part of the top segment. */
! 249: for (i = 0; i < len; i++)
! 250: {
! 251: tem = argv[bottom + i];
! 252: argv[bottom + i] = argv[top - (middle - bottom) + i];
! 253: argv[top - (middle - bottom) + i] = tem;
! 254: }
! 255: /* Exclude the moved bottom segment from further swapping. */
! 256: top -= len;
! 257: }
! 258: else
! 259: {
! 260: /* Top segment is the short one. */
! 261: int len = top - middle;
! 262: register int i;
! 263:
! 264: /* Swap it with the bottom part of the bottom segment. */
! 265: for (i = 0; i < len; i++)
! 266: {
! 267: tem = argv[bottom + i];
! 268: argv[bottom + i] = argv[middle + i];
! 269: argv[middle + i] = tem;
! 270: }
! 271: /* Exclude the moved top segment from further swapping. */
! 272: bottom += len;
! 273: }
! 274: }
! 275:
! 276: /* Update records for the slots the non-options now occupy. */
! 277:
! 278: first_nonopt += (optind - last_nonopt);
! 279: last_nonopt = optind;
! 280: }
! 281:
! 282: /* Initialize the internal data when the first call is made. */
! 283:
! 284: static const char *
! 285: _getopt_initialize (optstring)
! 286: const char *optstring;
! 287: {
! 288: /* Start processing options with ARGV-element 1 (since ARGV-element 0
! 289: is the program name); the sequence of previously skipped
! 290: non-option ARGV-elements is empty. */
! 291:
! 292: first_nonopt = last_nonopt = optind = 1;
! 293:
! 294: nextchar = NULL;
! 295:
! 296: posixly_correct = getenv ("POSIXLY_CORRECT");
! 297:
! 298: /* Determine how to handle the ordering of options and nonoptions. */
! 299:
! 300: if (optstring[0] == '-')
! 301: {
! 302: ordering = RETURN_IN_ORDER;
! 303: ++optstring;
! 304: }
! 305: else if (optstring[0] == '+')
! 306: {
! 307: ordering = REQUIRE_ORDER;
! 308: ++optstring;
! 309: }
! 310: else if (posixly_correct != NULL)
! 311: ordering = REQUIRE_ORDER;
! 312: else
! 313: ordering = PERMUTE;
! 314:
! 315: return optstring;
! 316: }
! 317:
! 318: /* Scan elements of ARGV (whose length is ARGC) for option characters
! 319: given in OPTSTRING.
! 320:
! 321: If an element of ARGV starts with '-', and is not exactly "-" or "--",
! 322: then it is an option element. The characters of this element
! 323: (aside from the initial '-') are option characters. If `getopt'
! 324: is called repeatedly, it returns successively each of the option characters
! 325: from each of the option elements.
! 326:
! 327: If `getopt' finds another option character, it returns that character,
! 328: updating `optind' and `nextchar' so that the next call to `getopt' can
! 329: resume the scan with the following option character or ARGV-element.
! 330:
! 331: If there are no more option characters, `getopt' returns `EOF'.
! 332: Then `optind' is the index in ARGV of the first ARGV-element
! 333: that is not an option. (The ARGV-elements have been permuted
! 334: so that those that are not options now come last.)
! 335:
! 336: OPTSTRING is a string containing the legitimate option characters.
! 337: If an option character is seen that is not listed in OPTSTRING,
! 338: return '?' after printing an error message. If you set `opterr' to
! 339: zero, the error message is suppressed but we still return '?'.
! 340:
! 341: If a char in OPTSTRING is followed by a colon, that means it wants an arg,
! 342: so the following text in the same ARGV-element, or the text of the following
! 343: ARGV-element, is returned in `optarg'. Two colons mean an option that
! 344: wants an optional arg; if there is text in the current ARGV-element,
! 345: it is returned in `optarg', otherwise `optarg' is set to zero.
! 346:
! 347: If OPTSTRING starts with `-' or `+', it requests different methods of
! 348: handling the non-option ARGV-elements.
! 349: See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above.
! 350:
! 351: Long-named options begin with `--' instead of `-'.
! 352: Their names may be abbreviated as long as the abbreviation is unique
! 353: or is an exact match for some defined option. If they have an
! 354: argument, it follows the option name in the same ARGV-element, separated
! 355: from the option name by a `=', or else the in next ARGV-element.
! 356: When `getopt' finds a long-named option, it returns 0 if that option's
! 357: `flag' field is nonzero, the value of the option's `val' field
! 358: if the `flag' field is zero.
! 359:
! 360: The elements of ARGV aren't really const, because we permute them.
! 361: But we pretend they're const in the prototype to be compatible
! 362: with other systems.
! 363:
! 364: LONGOPTS is a vector of `struct option' terminated by an
! 365: element containing a name which is zero.
! 366:
! 367: LONGIND returns the index in LONGOPT of the long-named option found.
! 368: It is only valid when a long-named option has been found by the most
! 369: recent call.
! 370:
! 371: If LONG_ONLY is nonzero, '-' as well as '--' can introduce
! 372: long-named options. */
! 373:
! 374: int
! 375: _getopt_internal (argc, argv, optstring, longopts, longind, long_only)
! 376: int argc;
! 377: char *const *argv;
! 378: const char *optstring;
! 379: const struct option *longopts;
! 380: int *longind;
! 381: int long_only;
! 382: {
! 383: optarg = NULL;
! 384:
! 385: if (optind == 0)
! 386: {
! 387: optstring = _getopt_initialize (optstring);
! 388: optind = 1; /* Don't scan ARGV[0], the program name. */
! 389: }
! 390:
! 391: if (nextchar == NULL || *nextchar == '\0')
! 392: {
! 393: /* Advance to the next ARGV-element. */
! 394:
! 395: if (ordering == PERMUTE)
! 396: {
! 397: /* If we have just processed some options following some non-options,
! 398: exchange them so that the options come first. */
! 399:
! 400: if (first_nonopt != last_nonopt && last_nonopt != optind)
! 401: exchange ((char **) argv);
! 402: else if (last_nonopt != optind)
! 403: first_nonopt = optind;
! 404:
! 405: /* Skip any additional non-options
! 406: and extend the range of non-options previously skipped. */
! 407:
! 408: while (optind < argc
! 409: && (argv[optind][0] != '-' || argv[optind][1] == '\0'))
! 410: optind++;
! 411: last_nonopt = optind;
! 412: }
! 413:
! 414: /* The special ARGV-element `--' means premature end of options.
! 415: Skip it like a null option,
! 416: then exchange with previous non-options as if it were an option,
! 417: then skip everything else like a non-option. */
! 418:
! 419: if (optind != argc && !strcmp (argv[optind], "--"))
! 420: {
! 421: optind++;
! 422:
! 423: if (first_nonopt != last_nonopt && last_nonopt != optind)
! 424: exchange ((char **) argv);
! 425: else if (first_nonopt == last_nonopt)
! 426: first_nonopt = optind;
! 427: last_nonopt = argc;
! 428:
! 429: optind = argc;
! 430: }
! 431:
! 432: /* If we have done all the ARGV-elements, stop the scan
! 433: and back over any non-options that we skipped and permuted. */
! 434:
! 435: if (optind == argc)
! 436: {
! 437: /* Set the next-arg-index to point at the non-options
! 438: that we previously skipped, so the caller will digest them. */
! 439: if (first_nonopt != last_nonopt)
! 440: optind = first_nonopt;
! 441: return EOF;
! 442: }
! 443:
! 444: /* If we have come to a non-option and did not permute it,
! 445: either stop the scan or describe it to the caller and pass it by. */
! 446:
! 447: if ((argv[optind][0] != '-' || argv[optind][1] == '\0'))
! 448: {
! 449: if (ordering == REQUIRE_ORDER)
! 450: return EOF;
! 451: optarg = argv[optind++];
! 452: return 1;
! 453: }
! 454:
! 455: /* We have found another option-ARGV-element.
! 456: Skip the initial punctuation. */
! 457:
! 458: nextchar = (argv[optind] + 1
! 459: + (longopts != NULL && argv[optind][1] == '-'));
! 460: }
! 461:
! 462: /* Decode the current option-ARGV-element. */
! 463:
! 464: /* Check whether the ARGV-element is a long option.
! 465:
! 466: If long_only and the ARGV-element has the form "-f", where f is
! 467: a valid short option, don't consider it an abbreviated form of
! 468: a long option that starts with f. Otherwise there would be no
! 469: way to give the -f short option.
! 470:
! 471: On the other hand, if there's a long option "fubar" and
! 472: the ARGV-element is "-fu", do consider that an abbreviation of
! 473: the long option, just like "--fu", and not "-f" with arg "u".
! 474:
! 475: This distinction seems to be the most useful approach. */
! 476:
! 477: if (longopts != NULL
! 478: && (argv[optind][1] == '-'
! 479: || (long_only && (argv[optind][2] || !my_index (optstring, argv[optind][1])))))
! 480: {
! 481: char *nameend;
! 482: const struct option *p;
! 483: const struct option *pfound = NULL;
! 484: int exact = 0;
! 485: int ambig = 0;
! 486: int indfound;
! 487: int option_index;
! 488:
! 489: for (nameend = nextchar; *nameend && *nameend != '='; nameend++)
! 490: /* Do nothing. */ ;
! 491:
! 492: /* Test all long options for either exact match
! 493: or abbreviated matches. */
! 494: for (p = longopts, option_index = 0; p->name; p++, option_index++)
! 495: if (!strncmp (p->name, nextchar, nameend - nextchar))
! 496: {
! 497: if (nameend - nextchar == strlen (p->name))
! 498: {
! 499: /* Exact match found. */
! 500: pfound = p;
! 501: indfound = option_index;
! 502: exact = 1;
! 503: break;
! 504: }
! 505: else if (pfound == NULL)
! 506: {
! 507: /* First nonexact match found. */
! 508: pfound = p;
! 509: indfound = option_index;
! 510: }
! 511: else
! 512: /* Second or later nonexact match found. */
! 513: ambig = 1;
! 514: }
! 515:
! 516: if (ambig && !exact)
! 517: {
! 518: if (opterr)
! 519: fprintf (stderr, gettext ("%s: option `%s' is ambiguous\n"),
! 520: argv[0], argv[optind]);
! 521: nextchar += strlen (nextchar);
! 522: optind++;
! 523: return '?';
! 524: }
! 525:
! 526: if (pfound != NULL)
! 527: {
! 528: option_index = indfound;
! 529: optind++;
! 530: if (*nameend)
! 531: {
! 532: /* Don't test has_arg with >, because some C compilers don't
! 533: allow it to be used on enums. */
! 534: if (pfound->has_arg)
! 535: optarg = nameend + 1;
! 536: else
! 537: {
! 538: if (opterr)
! 539: if (argv[optind - 1][1] == '-')
! 540: /* --option */
! 541: fprintf (stderr,
! 542: gettext ("%s: option `--%s' doesn't allow an argument\n"),
! 543: argv[0], pfound->name);
! 544: else
! 545: /* +option or -option */
! 546: fprintf (stderr,
! 547: gettext ("%s: option `%c%s' doesn't allow an argument\n"),
! 548: argv[0], argv[optind - 1][0], pfound->name);
! 549:
! 550: nextchar += strlen (nextchar);
! 551: return '?';
! 552: }
! 553: }
! 554: else if (pfound->has_arg == 1)
! 555: {
! 556: if (optind < argc)
! 557: optarg = argv[optind++];
! 558: else
! 559: {
! 560: if (opterr)
! 561: fprintf (stderr,
! 562: gettext ("%s: option `%s' requires an argument\n"),
! 563: argv[0], argv[optind - 1]);
! 564: nextchar += strlen (nextchar);
! 565: return optstring[0] == ':' ? ':' : '?';
! 566: }
! 567: }
! 568: nextchar += strlen (nextchar);
! 569: if (longind != NULL)
! 570: *longind = option_index;
! 571: if (pfound->flag)
! 572: {
! 573: *(pfound->flag) = pfound->val;
! 574: return 0;
! 575: }
! 576: return pfound->val;
! 577: }
! 578:
! 579: /* Can't find it as a long option. If this is not getopt_long_only,
! 580: or the option starts with '--' or is not a valid short
! 581: option, then it's an error.
! 582: Otherwise interpret it as a short option. */
! 583: if (!long_only || argv[optind][1] == '-'
! 584: || my_index (optstring, *nextchar) == NULL)
! 585: {
! 586: if (opterr)
! 587: {
! 588: if (argv[optind][1] == '-')
! 589: /* --option */
! 590: fprintf (stderr, gettext ("%s: unrecognized option `--%s'\n"),
! 591: argv[0], nextchar);
! 592: else
! 593: /* +option or -option */
! 594: fprintf (stderr, gettext ("%s: unrecognized option `%c%s'\n"),
! 595: argv[0], argv[optind][0], nextchar);
! 596: }
! 597: nextchar = (char *) "";
! 598: optind++;
! 599: return '?';
! 600: }
! 601: }
! 602:
! 603: /* Look at and handle the next short option-character. */
! 604:
! 605: {
! 606: char c = *nextchar++;
! 607: char *temp = my_index (optstring, c);
! 608:
! 609: /* Increment `optind' when we start to process its last character. */
! 610: if (*nextchar == '\0')
! 611: ++optind;
! 612:
! 613: if (temp == NULL || c == ':')
! 614: {
! 615: if (opterr)
! 616: {
! 617: if (posixly_correct)
! 618: /* 1003.2 specifies the format of this message. */
! 619: fprintf (stderr, gettext ("%s: illegal option -- %c\n"),
! 620: argv[0], c);
! 621: else
! 622: fprintf (stderr, gettext ("%s: invalid option -- %c\n"),
! 623: argv[0], c);
! 624: }
! 625: optopt = c;
! 626: return '?';
! 627: }
! 628: if (temp[1] == ':')
! 629: {
! 630: if (temp[2] == ':')
! 631: {
! 632: /* This is an option that accepts an argument optionally. */
! 633: if (*nextchar != '\0')
! 634: {
! 635: optarg = nextchar;
! 636: optind++;
! 637: }
! 638: else
! 639: optarg = NULL;
! 640: nextchar = NULL;
! 641: }
! 642: else
! 643: {
! 644: /* This is an option that requires an argument. */
! 645: if (*nextchar != '\0')
! 646: {
! 647: optarg = nextchar;
! 648: /* If we end this ARGV-element by taking the rest as an arg,
! 649: we must advance to the next element now. */
! 650: optind++;
! 651: }
! 652: else if (optind == argc)
! 653: {
! 654: if (opterr)
! 655: {
! 656: /* 1003.2 specifies the format of this message. */
! 657: fprintf (stderr,
! 658: gettext ("%s: option requires an argument -- %c\n"),
! 659: argv[0], c);
! 660: }
! 661: optopt = c;
! 662: if (optstring[0] == ':')
! 663: c = ':';
! 664: else
! 665: c = '?';
! 666: }
! 667: else
! 668: /* We already incremented `optind' once;
! 669: increment it again when taking next ARGV-elt as argument. */
! 670: optarg = argv[optind++];
! 671: nextchar = NULL;
! 672: }
! 673: }
! 674: return c;
! 675: }
! 676: }
! 677:
! 678: int
! 679: getopt (argc, argv, optstring)
! 680: int argc;
! 681: char *const *argv;
! 682: const char *optstring;
! 683: {
! 684: return _getopt_internal (argc, argv, optstring,
! 685: (const struct option *) 0,
! 686: (int *) 0,
! 687: 0);
! 688: }
! 689:
! 690: #endif /* _LIBC or not __GNU_LIBRARY__. */
! 691:
! 692: #ifdef TEST
! 693:
! 694: /* Compile with -DTEST to make an executable for use in testing
! 695: the above definition of `getopt'. */
! 696:
! 697: int
! 698: main (argc, argv)
! 699: int argc;
! 700: char **argv;
! 701: {
! 702: int c;
! 703: int digit_optind = 0;
! 704:
! 705: while (1)
! 706: {
! 707: int this_option_optind = optind ? optind : 1;
! 708:
! 709: c = getopt (argc, argv, "abc:d:0123456789");
! 710: if (c == EOF)
! 711: break;
! 712:
! 713: switch (c)
! 714: {
! 715: case '0':
! 716: case '1':
! 717: case '2':
! 718: case '3':
! 719: case '4':
! 720: case '5':
! 721: case '6':
! 722: case '7':
! 723: case '8':
! 724: case '9':
! 725: if (digit_optind != 0 && digit_optind != this_option_optind)
! 726: printf ("digits occur in two different argv-elements.\n");
! 727: digit_optind = this_option_optind;
! 728: printf ("option %c\n", c);
! 729: break;
! 730:
! 731: case 'a':
! 732: printf ("option a\n");
! 733: break;
! 734:
! 735: case 'b':
! 736: printf ("option b\n");
! 737: break;
! 738:
! 739: case 'c':
! 740: printf ("option c with value `%s'\n", optarg);
! 741: break;
! 742:
! 743: case '?':
! 744: break;
! 745:
! 746: default:
! 747: printf ("?? getopt returned character code 0%o ??\n", c);
! 748: }
! 749: }
! 750:
! 751: if (optind < argc)
! 752: {
! 753: printf ("non-option ARGV-elements: ");
! 754: while (optind < argc)
! 755: printf ("%s ", argv[optind++]);
! 756: printf ("\n");
! 757: }
! 758:
! 759: exit (0);
! 760: }
! 761:
! 762: #endif /* TEST */
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/cvsweb/back.gif){kind=icon}
Return to getopt.c CVS log ![[TXT]](/icons/cvsweb/text.gif){kind=icon}
![[DIR]](/icons/cvsweb/dir.gif){kind=icon}
Up to [local] / OpenXM / src / asir-doc / jtexindex / C