[16455] | 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 [email protected]
|
---|
| 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 |
|
---|
| 24 | /* NOTE!!! AIX requires this to be the first thing in the file.
|
---|
| 25 | Do not put ANYTHING before it! */
|
---|
| 26 | #if !defined (__GNUC__) && defined (_AIX)
|
---|
| 27 | #pragma alloca
|
---|
| 28 | #endif
|
---|
| 29 |
|
---|
| 30 | #include "autoconf.h"
|
---|
| 31 |
|
---|
| 32 | #ifdef __GNUC__
|
---|
| 33 | #define alloca __builtin_alloca
|
---|
| 34 | #else /* not __GNUC__ */
|
---|
| 35 | #if defined (HAVE_ALLOCA_H) || (defined(sparc) && (defined(sun) || (!defined(USG) && !defined(SVR4) && !defined(__svr4__))))
|
---|
| 36 | #include <alloca.h>
|
---|
| 37 | #else
|
---|
| 38 | #ifndef _AIX
|
---|
| 39 | char *alloca ();
|
---|
| 40 | #endif
|
---|
| 41 | #endif /* alloca.h */
|
---|
| 42 | #endif /* not __GNUC__ */
|
---|
| 43 |
|
---|
| 44 | #if !__STDC__ && !defined(const) && IN_GCC
|
---|
| 45 | #define const
|
---|
| 46 | #endif
|
---|
| 47 |
|
---|
| 48 | /* This tells Alpha OSF/1 not to define a getopt prototype in <stdio.h>. */
|
---|
| 49 | #ifndef _NO_PROTO
|
---|
| 50 | #define _NO_PROTO
|
---|
| 51 | #endif
|
---|
| 52 |
|
---|
| 53 | #include <stdio.h>
|
---|
| 54 |
|
---|
| 55 | /* Comment out all this code if we are using the GNU C Library, and are not
|
---|
| 56 | actually compiling the library itself. This code is part of the GNU C
|
---|
| 57 | Library, but also included in many other GNU distributions. Compiling
|
---|
| 58 | and linking in this code is a waste when using the GNU C library
|
---|
| 59 | (especially if it is a shared library). Rather than having every GNU
|
---|
| 60 | program understand `configure --with-gnu-libc' and omit the object files,
|
---|
| 61 | it is simpler to just do this in the source for each such file. */
|
---|
| 62 |
|
---|
| 63 | #if defined (_LIBC) || !defined (__GNU_LIBRARY__)
|
---|
| 64 |
|
---|
| 65 |
|
---|
| 66 | /* This needs to come after some library #include
|
---|
| 67 | to get __GNU_LIBRARY__ defined. */
|
---|
| 68 | #ifdef __GNU_LIBRARY__
|
---|
| 69 | #undef alloca
|
---|
| 70 | /* Don't include stdlib.h for non-GNU C libraries because some of them
|
---|
| 71 | contain conflicting prototypes for getopt. */
|
---|
| 72 | #include <stdlib.h>
|
---|
| 73 | #else /* Not GNU C library. */
|
---|
| 74 | #define __alloca alloca
|
---|
| 75 | #endif /* GNU C library. */
|
---|
| 76 |
|
---|
| 77 | /* If GETOPT_COMPAT is defined, `+' as well as `--' can introduce a
|
---|
| 78 | long-named option. Because this is not POSIX.2 compliant, it is
|
---|
| 79 | being phased out. */
|
---|
| 80 | /* #define GETOPT_COMPAT */
|
---|
| 81 |
|
---|
| 82 | /* This version of `getopt' appears to the caller like standard Unix `getopt'
|
---|
| 83 | but it behaves differently for the user, since it allows the user
|
---|
| 84 | to intersperse the options with the other arguments.
|
---|
| 85 |
|
---|
| 86 | As `getopt' works, it permutes the elements of ARGV so that,
|
---|
| 87 | when it is done, all the options precede everything else. Thus
|
---|
| 88 | all application programs are extended to handle flexible argument order.
|
---|
| 89 |
|
---|
| 90 | Setting the environment variable POSIXLY_CORRECT disables permutation.
|
---|
| 91 | Then the behavior is completely standard.
|
---|
| 92 |
|
---|
| 93 | GNU application programs can use a third alternative mode in which
|
---|
| 94 | they can distinguish the relative order of options and other arguments. */
|
---|
| 95 |
|
---|
| 96 | #include "getopt.h"
|
---|
| 97 |
|
---|
| 98 | /* For communication from `getopt' to the caller.
|
---|
| 99 | When `getopt' finds an option that takes an argument,
|
---|
| 100 | the argument value is returned here.
|
---|
| 101 | Also, when `ordering' is RETURN_IN_ORDER,
|
---|
| 102 | each non-option ARGV-element is returned here. */
|
---|
| 103 |
|
---|
| 104 | char *optarg = 0;
|
---|
| 105 |
|
---|
| 106 | /* Index in ARGV of the next element to be scanned.
|
---|
| 107 | This is used for communication to and from the caller
|
---|
| 108 | and for communication between successive calls to `getopt'.
|
---|
| 109 |
|
---|
| 110 | On entry to `getopt', zero means this is the first call; initialize.
|
---|
| 111 |
|
---|
| 112 | When `getopt' returns EOF, this is the index of the first of the
|
---|
| 113 | non-option elements that the caller should itself scan.
|
---|
| 114 |
|
---|
| 115 | Otherwise, `optind' communicates from one call to the next
|
---|
| 116 | how much of ARGV has been scanned so far. */
|
---|
| 117 |
|
---|
| 118 | /* XXX 1003.2 says this must be 1 before any call. */
|
---|
| 119 | int optind = 0;
|
---|
| 120 |
|
---|
| 121 | /* The next char to be scanned in the option-element
|
---|
| 122 | in which the last option character we returned was found.
|
---|
| 123 | This allows us to pick up the scan where we left off.
|
---|
| 124 |
|
---|
| 125 | If this is zero, or a null string, it means resume the scan
|
---|
| 126 | by advancing to the next ARGV-element. */
|
---|
| 127 |
|
---|
| 128 | static char *nextchar;
|
---|
| 129 |
|
---|
| 130 | /* Callers store zero here to inhibit the error message
|
---|
| 131 | for unrecognized options. */
|
---|
| 132 |
|
---|
| 133 | int opterr = 1;
|
---|
| 134 |
|
---|
| 135 | /* Set to an option character which was unrecognized.
|
---|
| 136 | This must be initialized on some systems to avoid linking in the
|
---|
| 137 | system's own getopt implementation. */
|
---|
| 138 |
|
---|
| 139 | int optopt = '?';
|
---|
| 140 |
|
---|
| 141 | /* Describe how to deal with options that follow non-option ARGV-elements.
|
---|
| 142 |
|
---|
| 143 | If the caller did not specify anything,
|
---|
| 144 | the default is REQUIRE_ORDER if the environment variable
|
---|
| 145 | POSIXLY_CORRECT is defined, PERMUTE otherwise.
|
---|
| 146 |
|
---|
| 147 | REQUIRE_ORDER means don't recognize them as options;
|
---|
| 148 | stop option processing when the first non-option is seen.
|
---|
| 149 | This is what Unix does.
|
---|
| 150 | This mode of operation is selected by either setting the environment
|
---|
| 151 | variable POSIXLY_CORRECT, or using `+' as the first character
|
---|
| 152 | of the list of option characters.
|
---|
| 153 |
|
---|
| 154 | PERMUTE is the default. We permute the contents of ARGV as we scan,
|
---|
| 155 | so that eventually all the non-options are at the end. This allows options
|
---|
| 156 | to be given in any order, even with programs that were not written to
|
---|
| 157 | expect this.
|
---|
| 158 |
|
---|
| 159 | RETURN_IN_ORDER is an option available to programs that were written
|
---|
| 160 | to expect options and other ARGV-elements in any order and that care about
|
---|
| 161 | the ordering of the two. We describe each non-option ARGV-element
|
---|
| 162 | as if it were the argument of an option with character code 1.
|
---|
| 163 | Using `-' as the first character of the list of option characters
|
---|
| 164 | selects this mode of operation.
|
---|
| 165 |
|
---|
| 166 | The special argument `--' forces an end of option-scanning regardless
|
---|
| 167 | of the value of `ordering'. In the case of RETURN_IN_ORDER, only
|
---|
| 168 | `--' can cause `getopt' to return EOF with `optind' != ARGC. */
|
---|
| 169 |
|
---|
| 170 | static enum
|
---|
| 171 | {
|
---|
| 172 | REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER
|
---|
| 173 | } ordering;
|
---|
| 174 | |
---|
| 175 |
|
---|
| 176 | #ifdef __GNU_LIBRARY__
|
---|
| 177 | /* We want to avoid inclusion of string.h with non-GNU libraries
|
---|
| 178 | because there are many ways it can cause trouble.
|
---|
| 179 | On some systems, it contains special magic macros that don't work
|
---|
| 180 | in GCC. */
|
---|
| 181 | #include <string.h>
|
---|
| 182 | #define my_index strchr
|
---|
| 183 | #define my_bcopy(src, dst, n) memcpy ((dst), (src), (n))
|
---|
| 184 | #else
|
---|
| 185 |
|
---|
| 186 | /* Avoid depending on library functions or files
|
---|
| 187 | whose names are inconsistent. */
|
---|
| 188 |
|
---|
| 189 | char *getenv ();
|
---|
| 190 |
|
---|
| 191 | static char *
|
---|
| 192 | my_index (str, chr)
|
---|
| 193 | const char *str;
|
---|
| 194 | int chr;
|
---|
| 195 | {
|
---|
| 196 | while (*str)
|
---|
| 197 | {
|
---|
| 198 | if (*str == chr)
|
---|
| 199 | return (char *) str;
|
---|
| 200 | str++;
|
---|
| 201 | }
|
---|
| 202 | return 0;
|
---|
| 203 | }
|
---|
| 204 |
|
---|
| 205 | static void
|
---|
| 206 | my_bcopy (from, to, size)
|
---|
| 207 | const char *from;
|
---|
| 208 | char *to;
|
---|
| 209 | int size;
|
---|
| 210 | {
|
---|
| 211 | int i;
|
---|
| 212 | for (i = 0; i < size; i++)
|
---|
| 213 | to[i] = from[i];
|
---|
| 214 | }
|
---|
| 215 | #endif /* GNU C library. */
|
---|
| 216 | |
---|
| 217 |
|
---|
| 218 | /* Handle permutation of arguments. */
|
---|
| 219 |
|
---|
| 220 | /* Describe the part of ARGV that contains non-options that have
|
---|
| 221 | been skipped. `first_nonopt' is the index in ARGV of the first of them;
|
---|
| 222 | `last_nonopt' is the index after the last of them. */
|
---|
| 223 |
|
---|
| 224 | static int first_nonopt;
|
---|
| 225 | static int last_nonopt;
|
---|
| 226 |
|
---|
| 227 | /* Exchange two adjacent subsequences of ARGV.
|
---|
| 228 | One subsequence is elements [first_nonopt,last_nonopt)
|
---|
| 229 | which contains all the non-options that have been skipped so far.
|
---|
| 230 | The other is elements [last_nonopt,optind), which contains all
|
---|
| 231 | the options processed since those non-options were skipped.
|
---|
| 232 |
|
---|
| 233 | `first_nonopt' and `last_nonopt' are relocated so that they describe
|
---|
| 234 | the new indices of the non-options in ARGV after they are moved. */
|
---|
| 235 |
|
---|
| 236 | static void
|
---|
| 237 | exchange (argv)
|
---|
| 238 | char **argv;
|
---|
| 239 | {
|
---|
| 240 | int nonopts_size = (last_nonopt - first_nonopt) * sizeof (char *);
|
---|
| 241 | char **temp = (char **) __alloca (nonopts_size);
|
---|
| 242 |
|
---|
| 243 | /* Interchange the two blocks of data in ARGV. */
|
---|
| 244 |
|
---|
| 245 | my_bcopy ((char *) &argv[first_nonopt], (char *) temp, nonopts_size);
|
---|
| 246 | my_bcopy ((char *) &argv[last_nonopt], (char *) &argv[first_nonopt],
|
---|
| 247 | (optind - last_nonopt) * sizeof (char *));
|
---|
| 248 | my_bcopy ((char *) temp,
|
---|
| 249 | (char *) &argv[first_nonopt + optind - last_nonopt],
|
---|
| 250 | nonopts_size);
|
---|
| 251 |
|
---|
| 252 | /* Update records for the slots the non-options now occupy. */
|
---|
| 253 |
|
---|
| 254 | first_nonopt += (optind - last_nonopt);
|
---|
| 255 | last_nonopt = optind;
|
---|
| 256 | }
|
---|
| 257 | |
---|
| 258 |
|
---|
| 259 | /* Scan elements of ARGV (whose length is ARGC) for option characters
|
---|
| 260 | given in OPTSTRING.
|
---|
| 261 |
|
---|
| 262 | If an element of ARGV starts with '-', and is not exactly "-" or "--",
|
---|
| 263 | then it is an option element. The characters of this element
|
---|
| 264 | (aside from the initial '-') are option characters. If `getopt'
|
---|
| 265 | is called repeatedly, it returns successively each of the option characters
|
---|
| 266 | from each of the option elements.
|
---|
| 267 |
|
---|
| 268 | If `getopt' finds another option character, it returns that character,
|
---|
| 269 | updating `optind' and `nextchar' so that the next call to `getopt' can
|
---|
| 270 | resume the scan with the following option character or ARGV-element.
|
---|
| 271 |
|
---|
| 272 | If there are no more option characters, `getopt' returns `EOF'.
|
---|
| 273 | Then `optind' is the index in ARGV of the first ARGV-element
|
---|
| 274 | that is not an option. (The ARGV-elements have been permuted
|
---|
| 275 | so that those that are not options now come last.)
|
---|
| 276 |
|
---|
| 277 | OPTSTRING is a string containing the legitimate option characters.
|
---|
| 278 | If an option character is seen that is not listed in OPTSTRING,
|
---|
| 279 | return '?' after printing an error message. If you set `opterr' to
|
---|
| 280 | zero, the error message is suppressed but we still return '?'.
|
---|
| 281 |
|
---|
| 282 | If a char in OPTSTRING is followed by a colon, that means it wants an arg,
|
---|
| 283 | so the following text in the same ARGV-element, or the text of the following
|
---|
| 284 | ARGV-element, is returned in `optarg'. Two colons mean an option that
|
---|
| 285 | wants an optional arg; if there is text in the current ARGV-element,
|
---|
| 286 | it is returned in `optarg', otherwise `optarg' is set to zero.
|
---|
| 287 |
|
---|
| 288 | If OPTSTRING starts with `-' or `+', it requests different methods of
|
---|
| 289 | handling the non-option ARGV-elements.
|
---|
| 290 | See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above.
|
---|
| 291 |
|
---|
| 292 | Long-named options begin with `--' instead of `-'.
|
---|
| 293 | Their names may be abbreviated as long as the abbreviation is unique
|
---|
| 294 | or is an exact match for some defined option. If they have an
|
---|
| 295 | argument, it follows the option name in the same ARGV-element, separated
|
---|
| 296 | from the option name by a `=', or else the in next ARGV-element.
|
---|
| 297 | When `getopt' finds a long-named option, it returns 0 if that option's
|
---|
| 298 | `flag' field is nonzero, the value of the option's `val' field
|
---|
| 299 | if the `flag' field is zero.
|
---|
| 300 |
|
---|
| 301 | The elements of ARGV aren't really const, because we permute them.
|
---|
| 302 | But we pretend they're const in the prototype to be compatible
|
---|
| 303 | with other systems.
|
---|
| 304 |
|
---|
| 305 | LONGOPTS is a vector of `struct option' terminated by an
|
---|
| 306 | element containing a name which is zero.
|
---|
| 307 |
|
---|
| 308 | LONGIND returns the index in LONGOPT of the long-named option found.
|
---|
| 309 | It is only valid when a long-named option has been found by the most
|
---|
| 310 | recent call.
|
---|
| 311 |
|
---|
| 312 | If LONG_ONLY is nonzero, '-' as well as '--' can introduce
|
---|
| 313 | long-named options. */
|
---|
| 314 |
|
---|
| 315 | int
|
---|
| 316 | _getopt_internal (argc, argv, optstring, longopts, longind, long_only)
|
---|
| 317 | int argc;
|
---|
| 318 | char *const *argv;
|
---|
| 319 | const char *optstring;
|
---|
| 320 | const struct option *longopts;
|
---|
| 321 | int *longind;
|
---|
| 322 | int long_only;
|
---|
| 323 | {
|
---|
| 324 | int option_index;
|
---|
| 325 |
|
---|
| 326 | optarg = 0;
|
---|
| 327 |
|
---|
| 328 | /* Initialize the internal data when the first call is made.
|
---|
| 329 | Start processing options with ARGV-element 1 (since ARGV-element 0
|
---|
| 330 | is the program name); the sequence of previously skipped
|
---|
| 331 | non-option ARGV-elements is empty. */
|
---|
| 332 |
|
---|
| 333 | if (optind == 0)
|
---|
| 334 | {
|
---|
| 335 | first_nonopt = last_nonopt = optind = 1;
|
---|
| 336 |
|
---|
| 337 | nextchar = NULL;
|
---|
| 338 |
|
---|
| 339 | /* Determine how to handle the ordering of options and nonoptions. */
|
---|
| 340 |
|
---|
| 341 | if (optstring[0] == '-')
|
---|
| 342 | {
|
---|
| 343 | ordering = RETURN_IN_ORDER;
|
---|
| 344 | ++optstring;
|
---|
| 345 | }
|
---|
| 346 | else if (optstring[0] == '+')
|
---|
| 347 | {
|
---|
| 348 | ordering = REQUIRE_ORDER;
|
---|
| 349 | ++optstring;
|
---|
| 350 | }
|
---|
| 351 | else if (getenv ("POSIXLY_CORRECT") != NULL)
|
---|
| 352 | ordering = REQUIRE_ORDER;
|
---|
| 353 | else
|
---|
| 354 | ordering = PERMUTE;
|
---|
| 355 | }
|
---|
| 356 |
|
---|
| 357 | if (nextchar == NULL || *nextchar == '\0')
|
---|
| 358 | {
|
---|
| 359 | if (ordering == PERMUTE)
|
---|
| 360 | {
|
---|
| 361 | /* If we have just processed some options following some non-options,
|
---|
| 362 | exchange them so that the options come first. */
|
---|
| 363 |
|
---|
| 364 | if (first_nonopt != last_nonopt && last_nonopt != optind)
|
---|
| 365 | exchange ((char **) argv);
|
---|
| 366 | else if (last_nonopt != optind)
|
---|
| 367 | first_nonopt = optind;
|
---|
| 368 |
|
---|
| 369 | /* Now skip any additional non-options
|
---|
| 370 | and extend the range of non-options previously skipped. */
|
---|
| 371 |
|
---|
| 372 | while (optind < argc
|
---|
| 373 | && (argv[optind][0] != '-' || argv[optind][1] == '\0')
|
---|
| 374 | #ifdef GETOPT_COMPAT
|
---|
| 375 | && (longopts == NULL
|
---|
| 376 | || argv[optind][0] != '+' || argv[optind][1] == '\0')
|
---|
| 377 | #endif /* GETOPT_COMPAT */
|
---|
| 378 | )
|
---|
| 379 | optind++;
|
---|
| 380 | last_nonopt = optind;
|
---|
| 381 | }
|
---|
| 382 |
|
---|
| 383 | /* Special ARGV-element `--' means premature end of options.
|
---|
| 384 | Skip it like a null option,
|
---|
| 385 | then exchange with previous non-options as if it were an option,
|
---|
| 386 | then skip everything else like a non-option. */
|
---|
| 387 |
|
---|
| 388 | if (optind != argc && !strcmp (argv[optind], "--"))
|
---|
| 389 | {
|
---|
| 390 | optind++;
|
---|
| 391 |
|
---|
| 392 | if (first_nonopt != last_nonopt && last_nonopt != optind)
|
---|
| 393 | exchange ((char **) argv);
|
---|
| 394 | else if (first_nonopt == last_nonopt)
|
---|
| 395 | first_nonopt = optind;
|
---|
| 396 | last_nonopt = argc;
|
---|
| 397 |
|
---|
| 398 | optind = argc;
|
---|
| 399 | }
|
---|
| 400 |
|
---|
| 401 | /* If we have done all the ARGV-elements, stop the scan
|
---|
| 402 | and back over any non-options that we skipped and permuted. */
|
---|
| 403 |
|
---|
| 404 | if (optind == argc)
|
---|
| 405 | {
|
---|
| 406 | /* Set the next-arg-index to point at the non-options
|
---|
| 407 | that we previously skipped, so the caller will digest them. */
|
---|
| 408 | if (first_nonopt != last_nonopt)
|
---|
| 409 | optind = first_nonopt;
|
---|
| 410 | return EOF;
|
---|
| 411 | }
|
---|
| 412 |
|
---|
| 413 | /* If we have come to a non-option and did not permute it,
|
---|
| 414 | either stop the scan or describe it to the caller and pass it by. */
|
---|
| 415 |
|
---|
| 416 | if ((argv[optind][0] != '-' || argv[optind][1] == '\0')
|
---|
| 417 | #ifdef GETOPT_COMPAT
|
---|
| 418 | && (longopts == NULL
|
---|
| 419 | || argv[optind][0] != '+' || argv[optind][1] == '\0')
|
---|
| 420 | #endif /* GETOPT_COMPAT */
|
---|
| 421 | )
|
---|
| 422 | {
|
---|
| 423 | if (ordering == REQUIRE_ORDER)
|
---|
| 424 | return EOF;
|
---|
| 425 | optarg = argv[optind++];
|
---|
| 426 | return 1;
|
---|
| 427 | }
|
---|
| 428 |
|
---|
| 429 | /* We have found another option-ARGV-element.
|
---|
| 430 | Start decoding its characters. */
|
---|
| 431 |
|
---|
| 432 | nextchar = (argv[optind] + 1
|
---|
| 433 | + (longopts != NULL && argv[optind][1] == '-'));
|
---|
| 434 | }
|
---|
| 435 |
|
---|
| 436 | if (longopts != NULL
|
---|
| 437 | && ((argv[optind][0] == '-'
|
---|
| 438 | && (argv[optind][1] == '-' || long_only))
|
---|
| 439 | #ifdef GETOPT_COMPAT
|
---|
| 440 | || argv[optind][0] == '+'
|
---|
| 441 | #endif /* GETOPT_COMPAT */
|
---|
| 442 | ))
|
---|
| 443 | {
|
---|
| 444 | const struct option *p;
|
---|
| 445 | char *s = nextchar;
|
---|
| 446 | int exact = 0;
|
---|
| 447 | int ambig = 0;
|
---|
| 448 | const struct option *pfound = NULL;
|
---|
| 449 | int indfound;
|
---|
| 450 |
|
---|
| 451 | while (*s && *s != '=')
|
---|
| 452 | s++;
|
---|
| 453 |
|
---|
| 454 | /* Test all options for either exact match or abbreviated matches. */
|
---|
| 455 | for (p = longopts, option_index = 0; p->name;
|
---|
| 456 | p++, option_index++)
|
---|
| 457 | if (!strncmp (p->name, nextchar, s - nextchar))
|
---|
| 458 | {
|
---|
| 459 | if (s - nextchar == strlen (p->name))
|
---|
| 460 | {
|
---|
| 461 | /* Exact match found. */
|
---|
| 462 | pfound = p;
|
---|
| 463 | indfound = option_index;
|
---|
| 464 | exact = 1;
|
---|
| 465 | break;
|
---|
| 466 | }
|
---|
| 467 | else if (pfound == NULL)
|
---|
| 468 | {
|
---|
| 469 | /* First nonexact match found. */
|
---|
| 470 | pfound = p;
|
---|
| 471 | indfound = option_index;
|
---|
| 472 | }
|
---|
| 473 | else
|
---|
| 474 | /* Second nonexact match found. */
|
---|
| 475 | ambig = 1;
|
---|
| 476 | }
|
---|
| 477 |
|
---|
| 478 | if (ambig && !exact)
|
---|
| 479 | {
|
---|
| 480 | if (opterr)
|
---|
| 481 | fprintf (stderr, "%s: option `%s' is ambiguous\n",
|
---|
| 482 | argv[0], argv[optind]);
|
---|
| 483 | nextchar += strlen (nextchar);
|
---|
| 484 | optind++;
|
---|
| 485 | return '?';
|
---|
| 486 | }
|
---|
| 487 |
|
---|
| 488 | if (pfound != NULL)
|
---|
| 489 | {
|
---|
| 490 | option_index = indfound;
|
---|
| 491 | optind++;
|
---|
| 492 | if (*s)
|
---|
| 493 | {
|
---|
| 494 | /* Don't test has_arg with >, because some C compilers don't
|
---|
| 495 | allow it to be used on enums. */
|
---|
| 496 | if (pfound->has_arg)
|
---|
| 497 | optarg = s + 1;
|
---|
| 498 | else
|
---|
| 499 | {
|
---|
| 500 | if (opterr)
|
---|
| 501 | {
|
---|
| 502 | if (argv[optind - 1][1] == '-')
|
---|
| 503 | /* --option */
|
---|
| 504 | fprintf (stderr,
|
---|
| 505 | "%s: option `--%s' doesn't allow an argument\n",
|
---|
| 506 | argv[0], pfound->name);
|
---|
| 507 | else
|
---|
| 508 | /* +option or -option */
|
---|
| 509 | fprintf (stderr,
|
---|
| 510 | "%s: option `%c%s' doesn't allow an argument\n",
|
---|
| 511 | argv[0], argv[optind - 1][0], pfound->name);
|
---|
| 512 | }
|
---|
| 513 | nextchar += strlen (nextchar);
|
---|
| 514 | return '?';
|
---|
| 515 | }
|
---|
| 516 | }
|
---|
| 517 | else if (pfound->has_arg == 1)
|
---|
| 518 | {
|
---|
| 519 | if (optind < argc)
|
---|
| 520 | optarg = argv[optind++];
|
---|
| 521 | else
|
---|
| 522 | {
|
---|
| 523 | if (opterr)
|
---|
| 524 | fprintf (stderr, "%s: option `%s' requires an argument\n",
|
---|
| 525 | argv[0], argv[optind - 1]);
|
---|
| 526 | nextchar += strlen (nextchar);
|
---|
| 527 | return optstring[0] == ':' ? ':' : '?';
|
---|
| 528 | }
|
---|
| 529 | }
|
---|
| 530 | nextchar += strlen (nextchar);
|
---|
| 531 | if (longind != NULL)
|
---|
| 532 | *longind = option_index;
|
---|
| 533 | if (pfound->flag)
|
---|
| 534 | {
|
---|
| 535 | *(pfound->flag) = pfound->val;
|
---|
| 536 | return 0;
|
---|
| 537 | }
|
---|
| 538 | return pfound->val;
|
---|
| 539 | }
|
---|
| 540 | /* Can't find it as a long option. If this is not getopt_long_only,
|
---|
| 541 | or the option starts with '--' or is not a valid short
|
---|
| 542 | option, then it's an error.
|
---|
| 543 | Otherwise interpret it as a short option. */
|
---|
| 544 | if (!long_only || argv[optind][1] == '-'
|
---|
| 545 | #ifdef GETOPT_COMPAT
|
---|
| 546 | || argv[optind][0] == '+'
|
---|
| 547 | #endif /* GETOPT_COMPAT */
|
---|
| 548 | || my_index (optstring, *nextchar) == NULL)
|
---|
| 549 | {
|
---|
| 550 | if (opterr)
|
---|
| 551 | {
|
---|
| 552 | if (argv[optind][1] == '-')
|
---|
| 553 | /* --option */
|
---|
| 554 | fprintf (stderr, "%s: unrecognized option `--%s'\n",
|
---|
| 555 | argv[0], nextchar);
|
---|
| 556 | else
|
---|
| 557 | /* +option or -option */
|
---|
| 558 | fprintf (stderr, "%s: unrecognized option `%c%s'\n",
|
---|
| 559 | argv[0], argv[optind][0], nextchar);
|
---|
| 560 | }
|
---|
| 561 | nextchar = (char *) "";
|
---|
| 562 | optind++;
|
---|
| 563 | return '?';
|
---|
| 564 | }
|
---|
| 565 | }
|
---|
| 566 |
|
---|
| 567 | /* Look at and handle the next option-character. */
|
---|
| 568 |
|
---|
| 569 | {
|
---|
| 570 | char c = *nextchar++;
|
---|
| 571 | char *temp = my_index (optstring, c);
|
---|
| 572 |
|
---|
| 573 | /* Increment `optind' when we start to process its last character. */
|
---|
| 574 | if (*nextchar == '\0')
|
---|
| 575 | ++optind;
|
---|
| 576 |
|
---|
| 577 | if (temp == NULL || c == ':')
|
---|
| 578 | {
|
---|
| 579 | if (opterr)
|
---|
| 580 | {
|
---|
| 581 | #if 0
|
---|
| 582 | if (c < 040 || c >= 0177)
|
---|
| 583 | fprintf (stderr, "%s: unrecognized option, character code 0%o\n",
|
---|
| 584 | argv[0], c);
|
---|
| 585 | else
|
---|
| 586 | fprintf (stderr, "%s: unrecognized option `-%c'\n", argv[0], c);
|
---|
| 587 | #else
|
---|
| 588 | /* 1003.2 specifies the format of this message. */
|
---|
| 589 | fprintf (stderr, "%s: illegal option -- %c\n", argv[0], c);
|
---|
| 590 | #endif
|
---|
| 591 | }
|
---|
| 592 | optopt = c;
|
---|
| 593 | return '?';
|
---|
| 594 | }
|
---|
| 595 | if (temp[1] == ':')
|
---|
| 596 | {
|
---|
| 597 | if (temp[2] == ':')
|
---|
| 598 | {
|
---|
| 599 | /* This is an option that accepts an argument optionally. */
|
---|
| 600 | if (*nextchar != '\0')
|
---|
| 601 | {
|
---|
| 602 | optarg = nextchar;
|
---|
| 603 | optind++;
|
---|
| 604 | }
|
---|
| 605 | else
|
---|
| 606 | optarg = 0;
|
---|
| 607 | nextchar = NULL;
|
---|
| 608 | }
|
---|
| 609 | else
|
---|
| 610 | {
|
---|
| 611 | /* This is an option that requires an argument. */
|
---|
| 612 | if (*nextchar != '\0')
|
---|
| 613 | {
|
---|
| 614 | optarg = nextchar;
|
---|
| 615 | /* If we end this ARGV-element by taking the rest as an arg,
|
---|
| 616 | we must advance to the next element now. */
|
---|
| 617 | optind++;
|
---|
| 618 | }
|
---|
| 619 | else if (optind == argc)
|
---|
| 620 | {
|
---|
| 621 | if (opterr)
|
---|
| 622 | {
|
---|
| 623 | #if 0
|
---|
| 624 | fprintf (stderr, "%s: option `-%c' requires an argument\n",
|
---|
| 625 | argv[0], c);
|
---|
| 626 | #else
|
---|
| 627 | /* 1003.2 specifies the format of this message. */
|
---|
| 628 | fprintf (stderr, "%s: option requires an argument -- %c\n",
|
---|
| 629 | argv[0], c);
|
---|
| 630 | #endif
|
---|
| 631 | }
|
---|
| 632 | optopt = c;
|
---|
| 633 | if (optstring[0] == ':')
|
---|
| 634 | c = ':';
|
---|
| 635 | else
|
---|
| 636 | c = '?';
|
---|
| 637 | }
|
---|
| 638 | else
|
---|
| 639 | /* We already incremented `optind' once;
|
---|
| 640 | increment it again when taking next ARGV-elt as argument. */
|
---|
| 641 | optarg = argv[optind++];
|
---|
| 642 | nextchar = NULL;
|
---|
| 643 | }
|
---|
| 644 | }
|
---|
| 645 | return c;
|
---|
| 646 | }
|
---|
| 647 | }
|
---|
| 648 |
|
---|
| 649 | int
|
---|
| 650 | getopt (argc, argv, optstring)
|
---|
| 651 | int argc;
|
---|
| 652 | char *const *argv;
|
---|
| 653 | const char *optstring;
|
---|
| 654 | {
|
---|
| 655 | return _getopt_internal (argc, argv, optstring,
|
---|
| 656 | (const struct option *) 0,
|
---|
| 657 | (int *) 0,
|
---|
| 658 | 0);
|
---|
| 659 | }
|
---|
| 660 |
|
---|
| 661 | #endif /* _LIBC or not __GNU_LIBRARY__. */
|
---|
| 662 | |
---|
| 663 |
|
---|
| 664 | #ifdef TEST
|
---|
| 665 |
|
---|
| 666 | /* Compile with -DTEST to make an executable for use in testing
|
---|
| 667 | the above definition of `getopt'. */
|
---|
| 668 |
|
---|
| 669 | int
|
---|
| 670 | main (argc, argv)
|
---|
| 671 | int argc;
|
---|
| 672 | char **argv;
|
---|
| 673 | {
|
---|
| 674 | int c;
|
---|
| 675 | int digit_optind = 0;
|
---|
| 676 |
|
---|
| 677 | while (1)
|
---|
| 678 | {
|
---|
| 679 | int this_option_optind = optind ? optind : 1;
|
---|
| 680 |
|
---|
| 681 | c = getopt (argc, argv, "abc:d:0123456789");
|
---|
| 682 | if (c == EOF)
|
---|
| 683 | break;
|
---|
| 684 |
|
---|
| 685 | switch (c)
|
---|
| 686 | {
|
---|
| 687 | case '0':
|
---|
| 688 | case '1':
|
---|
| 689 | case '2':
|
---|
| 690 | case '3':
|
---|
| 691 | case '4':
|
---|
| 692 | case '5':
|
---|
| 693 | case '6':
|
---|
| 694 | case '7':
|
---|
| 695 | case '8':
|
---|
| 696 | case '9':
|
---|
| 697 | if (digit_optind != 0 && digit_optind != this_option_optind)
|
---|
| 698 | printf ("digits occur in two different argv-elements.\n");
|
---|
| 699 | digit_optind = this_option_optind;
|
---|
| 700 | printf ("option %c\n", c);
|
---|
| 701 | break;
|
---|
| 702 |
|
---|
| 703 | case 'a':
|
---|
| 704 | printf ("option a\n");
|
---|
| 705 | break;
|
---|
| 706 |
|
---|
| 707 | case 'b':
|
---|
| 708 | printf ("option b\n");
|
---|
| 709 | break;
|
---|
| 710 |
|
---|
| 711 | case 'c':
|
---|
| 712 | printf ("option c with value `%s'\n", optarg);
|
---|
| 713 | break;
|
---|
| 714 |
|
---|
| 715 | case '?':
|
---|
| 716 | break;
|
---|
| 717 |
|
---|
| 718 | default:
|
---|
| 719 | printf ("?? getopt returned character code 0%o ??\n", c);
|
---|
| 720 | }
|
---|
| 721 | }
|
---|
| 722 |
|
---|
| 723 | if (optind < argc)
|
---|
| 724 | {
|
---|
| 725 | printf ("non-option ARGV-elements: ");
|
---|
| 726 | while (optind < argc)
|
---|
| 727 | printf ("%s ", argv[optind++]);
|
---|
| 728 | printf ("\n");
|
---|
| 729 | }
|
---|
| 730 |
|
---|
| 731 | exit (0);
|
---|
| 732 | }
|
---|
| 733 |
|
---|
| 734 | #endif /* TEST */
|
---|