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
6 Copyright (C) 1987, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97
7 Free Software Foundation, Inc.
9 NOTE: The canonical source of this file is maintained with the GNU C Library.
10 Bugs can be reported to bug-glibc@prep.ai.mit.edu.
12 This program is free software; you can redistribute it and/or modify it
13 under the terms of the GNU General Public License as published by the
14 Free Software Foundation; either version 2, or (at your option) any
17 This program is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 GNU General Public License for more details.
22 You should have received a copy of the GNU General Public License
23 along with this program; if not, write to the Free Software
24 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
28 This code was heavily modified for GNUnet.
29 Copyright (C) 2006 Christian Grothoff
34 * @brief GNU style option parsing
36 * TODO: get rid of statics (make reentrant) and
37 * replace main GNU getopt parser with one that
38 * actually fits our API.
42 #include "gnunet_common.h"
43 #include "gnunet_getopt_lib.h"
52 #define LOG(kind,...) GNUNET_log_from (kind, "util", __VA_ARGS__)
54 #define LOG_STRERROR(kind,syscall) GNUNET_log_from_strerror (kind, "util", syscall)
56 #if defined (WIN32) && !defined (__CYGWIN32__)
57 /* It's not Unix, really. See? Capital letters. */
59 #define getpid() GetCurrentProcessId()
63 /* This is for other GNU distributions with internationalized messages.
64 When compiling libc, the _ macro is predefined. */
67 #define _(msgid) gettext (msgid)
69 #define _(msgid) (msgid)
73 /* Describe the long-named options requested by the application.
74 The LONG_OPTIONS argument to getopt_long or getopt_long_only is a vector
75 of `struct GNoption' terminated by an element containing a name which is
78 The field `has_arg' is:
79 no_argument (or 0) if the option does not take an argument,
80 required_argument (or 1) if the option requires an argument,
81 optional_argument (or 2) if the option takes an optional argument.
83 If the field `flag' is not NULL, it points to a variable that is set
84 to the value given in the field `val' when the option is found, but
85 left unchanged if the option is not found.
87 To have a long-named option do something other than set an `int' to
88 a compiled-in constant, such as set a value from `GNoptarg', set the
89 option's `flag' field to zero and its `val' field to a nonzero
90 value (the equivalent single-letter option character, if there is
91 one). For long options that have a zero `flag' field, `getopt'
92 returns the contents of the `val' field. */
97 /* has_arg can't be an enum because some compilers complain about
98 * type mismatches in all the code that assumes it is an int. */
105 /* This version of `getopt' appears to the caller like standard Unix `getopt'
106 but it behaves differently for the user, since it allows the user
107 to intersperse the options with the other arguments.
109 As `getopt' works, it permutes the elements of ARGV so that,
110 when it is done, all the options precede everything else. Thus
111 all application programs are extended to handle flexible argument order.
113 Setting the environment variable POSIXLY_CORRECT disables permutation.
114 Then the behavior is completely standard.
116 GNU application programs can use a third alternative mode in which
117 they can distinguish the relative order of options and other arguments. */
119 /* For communication from `getopt' to the caller.
120 When `getopt' finds an option that takes an argument,
121 the argument value is returned here.
122 Also, when `ordering' is RETURN_IN_ORDER,
123 each non-option ARGV-element is returned here. */
125 static char *GNoptarg = NULL;
127 /* Index in ARGV of the next element to be scanned.
128 This is used for communication to and from the caller
129 and for communication between successive calls to `getopt'.
131 On entry to `getopt', zero means this is the first call; initialize.
133 When `getopt' returns -1, this is the index of the first of the
134 non-option elements that the caller should itself scan.
136 Otherwise, `GNoptind' communicates from one call to the next
137 how much of ARGV has been scanned so far. */
139 /* 1003.2 says this must be 1 before any call. */
140 static int GNoptind = 1;
142 /* The next char to be scanned in the option-element
143 in which the last option character we returned was found.
144 This allows us to pick up the scan where we left off.
146 If this is zero, or a null string, it means resume the scan
147 by advancing to the next ARGV-element. */
149 static char *nextchar;
152 /* Describe how to deal with options that follow non-option ARGV-elements.
154 If the caller did not specify anything,
155 the default is REQUIRE_ORDER if the environment variable
156 POSIXLY_CORRECT is defined, PERMUTE otherwise.
158 REQUIRE_ORDER means don't recognize them as options;
159 stop option processing when the first non-option is seen.
160 This is what Unix does.
161 This mode of operation is selected by either setting the environment
162 variable POSIXLY_CORRECT, or using `+' as the first character
163 of the list of option characters.
165 PERMUTE is the default. We GNUNET_CRYPTO_random_permute the contents of ARGV as we scan,
166 so that eventually all the non-options are at the end. This allows options
167 to be given in any order, even with programs that were not written to
170 RETURN_IN_ORDER is an option available to programs that were written
171 to expect GNoptions and other ARGV-elements in any order and that care about
172 the ordering of the two. We describe each non-option ARGV-element
173 as if it were the argument of an option with character code 1.
174 Using `-' as the first character of the list of option characters
175 selects this mode of operation.
177 The special argument `--' forces an end of option-scanning regardless
178 of the value of `ordering'. In the case of RETURN_IN_ORDER, only
179 `--' can cause `getopt' to return -1 with `GNoptind' != ARGC. */
183 REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER
186 /* Value of POSIXLY_CORRECT environment variable. */
187 static char *posixly_correct;
189 #ifdef __GNU_LIBRARY__
190 /* We want to avoid inclusion of string.h with non-GNU libraries
191 because there are many ways it can cause trouble.
192 On some systems, it contains special magic macros that don't work
195 #define my_index strchr
198 /* Avoid depending on library functions or files
199 whose names are inconsistent. */
218 /* If using GCC, we can safely declare strlen this way.
219 If not using GCC, it is ok not to declare it. */
221 /* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h.
222 That was relevant to code that was here before. */
223 #if !defined (__STDC__) || !__STDC__
224 /* gcc with -traditional declares the built-in strlen to return int,
225 and has done so at least since version 2.4.5. -- rms. */
227 strlen (const char *);
228 #endif /* not __STDC__ */
229 #endif /* __GNUC__ */
231 #endif /* not __GNU_LIBRARY__ */
233 /* Handle permutation of arguments. */
235 /* Describe the part of ARGV that contains non-options that have
236 been skipped. `first_nonopt' is the index in ARGV of the first of them;
237 `last_nonopt' is the index after the last of them. */
239 static int first_nonopt;
240 static int last_nonopt;
243 /* Bash 2.0 gives us an environment variable containing flags
244 indicating ARGV elements that should not be considered arguments. */
246 /* Defined in getopt_init.c */
247 extern char *__getopt_nonoption_flags;
249 static int nonoption_flags_max_len;
250 static int nonoption_flags_len;
252 static int original_argc;
253 static char *const *original_argv;
255 extern pid_t __libc_pid;
257 /* Make sure the environment variable bash 2.0 puts in the environment
258 is valid for the getopt call we must make sure that the ARGV passed
259 to getopt is that one passed to the process. */
260 static void GNUNET_UNUSED
261 store_args_and_env (int argc, char *const *argv)
263 /* XXX This is no good solution. We should rather copy the args so
264 * that we can compare them later. But we must not use malloc(3). */
265 original_argc = argc;
266 original_argv = argv;
269 text_set_element (__libc_subinit, store_args_and_env);
271 #define SWAP_FLAGS(ch1, ch2) \
272 if (nonoption_flags_len > 0) \
274 char __tmp = __getopt_nonoption_flags[ch1]; \
275 __getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2]; \
276 __getopt_nonoption_flags[ch2] = __tmp; \
279 #define SWAP_FLAGS(ch1, ch2)
282 /* Exchange two adjacent subsequences of ARGV.
283 One subsequence is elements [first_nonopt,last_nonopt)
284 which contains all the non-options that have been skipped so far.
285 The other is elements [last_nonopt,GNoptind), which contains all
286 the options processed since those non-options were skipped.
288 `first_nonopt' and `last_nonopt' are relocated so that they describe
289 the new indices of the non-options in ARGV after they are moved. */
291 #if defined (__STDC__) && __STDC__
300 int bottom = first_nonopt;
301 int middle = last_nonopt;
305 /* Exchange the shorter segment with the far end of the longer segment.
306 * That puts the shorter segment into the right place.
307 * It leaves the longer segment in the right place overall,
308 * but it consists of two parts that need to be swapped next. */
311 /* First make sure the handling of the `__getopt_nonoption_flags'
312 * string can work normally. Our top argument must be in the range
314 if (nonoption_flags_len > 0 && top >= nonoption_flags_max_len)
316 /* We must extend the array. The user plays games with us and
317 * presents new arguments. */
318 char *new_str = malloc (top + 1);
321 nonoption_flags_len = nonoption_flags_max_len = 0;
324 memcpy (new_str, __getopt_nonoption_flags, nonoption_flags_max_len);
325 memset (&new_str[nonoption_flags_max_len], '\0',
326 top + 1 - nonoption_flags_max_len);
327 nonoption_flags_max_len = top + 1;
328 __getopt_nonoption_flags = new_str;
333 while (top > middle && middle > bottom)
335 if (top - middle > middle - bottom)
337 /* Bottom segment is the short one. */
338 int len = middle - bottom;
341 /* Swap it with the top part of the top segment. */
342 for (i = 0; i < len; i++)
344 tem = argv[bottom + i];
345 argv[bottom + i] = argv[top - (middle - bottom) + i];
346 argv[top - (middle - bottom) + i] = tem;
347 SWAP_FLAGS (bottom + i, top - (middle - bottom) + i);
349 /* Exclude the moved bottom segment from further swapping. */
354 /* Top segment is the short one. */
355 int len = top - middle;
358 /* Swap it with the bottom part of the bottom segment. */
359 for (i = 0; i < len; i++)
361 tem = argv[bottom + i];
362 argv[bottom + i] = argv[middle + i];
363 argv[middle + i] = tem;
364 SWAP_FLAGS (bottom + i, middle + i);
366 /* Exclude the moved top segment from further swapping. */
371 /* Update records for the slots the non-options now occupy. */
373 first_nonopt += (GNoptind - last_nonopt);
374 last_nonopt = GNoptind;
377 /* Initialize the internal data when the first call is made. */
379 #if defined (__STDC__) && __STDC__
381 _getopt_initialize (int, char *const *, const char *);
384 _getopt_initialize (argc, argv, optstring)
387 const char *optstring;
389 /* Start processing options with ARGV-element 1 (since ARGV-element 0
390 * is the program name); the sequence of previously skipped
391 * non-option ARGV-elements is empty. */
393 first_nonopt = last_nonopt = GNoptind;
397 posixly_correct = getenv ("POSIXLY_CORRECT");
399 /* Determine how to handle the ordering of options and nonoptions. */
401 if (optstring[0] == '-')
403 ordering = RETURN_IN_ORDER;
406 else if (optstring[0] == '+')
408 ordering = REQUIRE_ORDER;
411 else if (posixly_correct != NULL)
412 ordering = REQUIRE_ORDER;
417 if (posixly_correct == NULL && argc == original_argc && argv == original_argv)
419 if (nonoption_flags_max_len == 0)
421 if (__getopt_nonoption_flags == NULL ||
422 __getopt_nonoption_flags[0] == '\0')
423 nonoption_flags_max_len = -1;
426 const char *orig_str = __getopt_nonoption_flags;
427 int len = nonoption_flags_max_len = strlen (orig_str);
429 if (nonoption_flags_max_len < argc)
430 nonoption_flags_max_len = argc;
431 __getopt_nonoption_flags = (char *) malloc (nonoption_flags_max_len);
432 if (__getopt_nonoption_flags == NULL)
433 nonoption_flags_max_len = -1;
436 memcpy (__getopt_nonoption_flags, orig_str, len);
437 memset (&__getopt_nonoption_flags[len], '\0',
438 nonoption_flags_max_len - len);
442 nonoption_flags_len = nonoption_flags_max_len;
445 nonoption_flags_len = 0;
451 /* Scan elements of ARGV (whose length is ARGC) for option characters
454 If an element of ARGV starts with '-', and is not exactly "-" or "--",
455 then it is an option element. The characters of this element
456 (aside from the initial '-') are option characters. If `getopt'
457 is called repeatedly, it returns successively each of the option characters
458 from each of the option elements.
460 If `getopt' finds another option character, it returns that character,
461 updating `GNoptind' and `nextchar' so that the next call to `getopt' can
462 resume the scan with the following option character or ARGV-element.
464 If there are no more option characters, `getopt' returns -1.
465 Then `GNoptind' is the index in ARGV of the first ARGV-element
466 that is not an option. (The ARGV-elements have been permuted
467 so that those that are not options now come last.)
469 OPTSTRING is a string containing the legitimate option characters.
470 If an option character is seen that is not listed in OPTSTRING,
471 return '?' after printing an error message. If you set `GNopterr' to
472 zero, the error message is suppressed but we still return '?'.
474 If a char in OPTSTRING is followed by a colon, that means it wants an arg,
475 so the following text in the same ARGV-element, or the text of the following
476 ARGV-element, is returned in `GNoptarg'. Two colons mean an option that
477 wants an optional arg; if there is text in the current ARGV-element,
478 it is returned in `GNoptarg', otherwise `GNoptarg' is set to zero.
480 If OPTSTRING starts with `-' or `+', it requests different methods of
481 handling the non-option ARGV-elements.
482 See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above.
484 Long-named options begin with `--' instead of `-'.
485 Their names may be abbreviated as long as the abbreviation is unique
486 or is an exact match for some defined option. If they have an
487 argument, it follows the option name in the same ARGV-element, separated
488 from the option name by a `=', or else the in next ARGV-element.
489 When `getopt' finds a long-named option, it returns 0 if that option's
490 `flag' field is nonzero, the value of the option's `val' field
491 if the `flag' field is zero.
493 The elements of ARGV aren't really const, because we GNUNET_CRYPTO_random_permute them.
494 But we pretend they're const in the prototype to be compatible
497 LONGOPTS is a vector of `struct GNoption' terminated by an
498 element containing a name which is zero.
500 LONGIND returns the index in LONGOPT of the long-named option found.
501 It is only valid when a long-named option has been found by the most
504 If LONG_ONLY is nonzero, '-' as well as '--' can introduce
505 long-named options. */
508 GN_getopt_internal (int argc, char *const *argv, const char *optstring,
509 const struct GNoption *longopts, int *longind,
512 static int __getopt_initialized = 0;
513 static int GNopterr = 1;
517 if (GNoptind == 0 || !__getopt_initialized)
520 GNoptind = 1; /* Don't scan ARGV[0], the program name. */
521 optstring = _getopt_initialize (argc, argv, optstring);
522 __getopt_initialized = 1;
525 /* Test whether ARGV[GNoptind] points to a non-option argument.
526 * Either it does not have option syntax, or there is an environment flag
527 * from the shell indicating it is not an option. The later information
528 * is only used when the used in the GNU libc. */
530 #define NONOPTION_P (argv[GNoptind][0] != '-' || argv[GNoptind][1] == '\0' \
531 || (GNoptind < nonoption_flags_len \
532 && __getopt_nonoption_flags[GNoptind] == '1'))
534 #define NONOPTION_P (argv[GNoptind][0] != '-' || argv[GNoptind][1] == '\0')
537 if (nextchar == NULL || *nextchar == '\0')
539 /* Advance to the next ARGV-element. */
541 /* Give FIRST_NONOPT & LAST_NONOPT rational values if GNoptind has been
542 * moved back by the user (who may also have changed the arguments). */
543 if (last_nonopt > GNoptind)
544 last_nonopt = GNoptind;
545 if (first_nonopt > GNoptind)
546 first_nonopt = GNoptind;
548 if (ordering == PERMUTE)
550 /* If we have just processed some options following some non-options,
551 * exchange them so that the options come first. */
553 if (first_nonopt != last_nonopt && last_nonopt != GNoptind)
554 exchange ((char **) argv);
555 else if (last_nonopt != GNoptind)
556 first_nonopt = GNoptind;
558 /* Skip any additional non-options
559 * and extend the range of non-options previously skipped. */
561 while (GNoptind < argc && NONOPTION_P)
563 last_nonopt = GNoptind;
566 /* The special ARGV-element `--' means premature end of options.
567 * Skip it like a null option,
568 * then exchange with previous non-options as if it were an option,
569 * then skip everything else like a non-option. */
570 if (GNoptind != argc && !strcmp (argv[GNoptind], "--"))
574 if (first_nonopt != last_nonopt && last_nonopt != GNoptind)
575 exchange ((char **) argv);
576 else if (first_nonopt == last_nonopt)
577 first_nonopt = GNoptind;
583 /* If we have done all the ARGV-elements, stop the scan
584 * and back over any non-options that we skipped and permuted. */
586 if (GNoptind == argc)
588 /* Set the next-arg-index to point at the non-options
589 * that we previously skipped, so the caller will digest them. */
590 if (first_nonopt != last_nonopt)
591 GNoptind = first_nonopt;
595 /* If we have come to a non-option and did not permute it,
596 * either stop the scan or describe it to the caller and pass it by. */
600 if (ordering == REQUIRE_ORDER)
602 GNoptarg = argv[GNoptind++];
606 /* We have found another option-ARGV-element.
607 * Skip the initial punctuation. */
610 (argv[GNoptind] + 1 + (longopts != NULL && argv[GNoptind][1] == '-'));
613 /* Decode the current option-ARGV-element. */
615 /* Check whether the ARGV-element is a long option.
617 * If long_only and the ARGV-element has the form "-f", where f is
618 * a valid short option, don't consider it an abbreviated form of
619 * a long option that starts with f. Otherwise there would be no
620 * way to give the -f short option.
622 * On the other hand, if there's a long option "fubar" and
623 * the ARGV-element is "-fu", do consider that an abbreviation of
624 * the long option, just like "--fu", and not "-f" with arg "u".
626 * This distinction seems to be the most useful approach. */
628 if (longopts != NULL &&
629 (argv[GNoptind][1] == '-' ||
631 (argv[GNoptind][2] || !my_index (optstring, argv[GNoptind][1])))))
634 const struct GNoption *p;
635 const struct GNoption *pfound = NULL;
641 for (nameend = nextchar; *nameend && *nameend != '='; nameend++)
644 /* Test all long options for either exact match
645 * or abbreviated matches. */
646 for (p = longopts, option_index = 0; p->name; p++, option_index++)
647 if (!strncmp (p->name, nextchar, nameend - nextchar))
649 if ((unsigned int) (nameend - nextchar) ==
650 (unsigned int) strlen (p->name))
652 /* Exact match found. */
654 indfound = option_index;
658 else if (pfound == NULL)
660 /* First nonexact match found. */
662 indfound = option_index;
665 /* Second or later nonexact match found. */
672 FPRINTF (stderr, _("%s: option `%s' is ambiguous\n"), argv[0],
674 nextchar += strlen (nextchar);
681 option_index = indfound;
685 /* Don't test has_arg with >, because some C compilers don't
686 * allow it to be used on enums. */
688 GNoptarg = nameend + 1;
693 if (argv[GNoptind - 1][1] == '-')
696 _("%s: option `--%s' does not allow an argument\n"),
697 argv[0], pfound->name);
699 /* +option or -option */
701 _("%s: option `%c%s' does not allow an argument\n"),
702 argv[0], argv[GNoptind - 1][0], pfound->name);
704 nextchar += strlen (nextchar);
708 else if (pfound->has_arg == 1)
712 GNoptarg = argv[GNoptind++];
718 FPRINTF (stderr, _("%s: option `%s' requires an argument\n"),
719 argv[0], argv[GNoptind - 1]);
721 nextchar += strlen (nextchar);
722 return (optstring[0] == ':') ? ':' : '?';
725 nextchar += strlen (nextchar);
727 *longind = option_index;
730 *(pfound->flag) = pfound->val;
736 /* Can't find it as a long option. If this is not getopt_long_only,
737 * or the option starts with '--' or is not a valid short
738 * option, then it's an error.
739 * Otherwise interpret it as a short option. */
740 if (!long_only || argv[GNoptind][1] == '-' ||
741 my_index (optstring, *nextchar) == NULL)
745 if (argv[GNoptind][1] == '-')
747 FPRINTF (stderr, _("%s: unrecognized option `--%s'\n"), argv[0],
750 /* +option or -option */
751 FPRINTF (stderr, _("%s: unrecognized option `%c%s'\n"), argv[0],
752 argv[GNoptind][0], nextchar);
754 nextchar = (char *) "";
760 /* Look at and handle the next short option-character. */
763 char c = *nextchar++;
764 char *temp = my_index (optstring, c);
766 /* Increment `GNoptind' when we start to process its last character. */
767 if (*nextchar == '\0')
770 if (temp == NULL || c == ':')
775 /* 1003.2 specifies the format of this message. */
776 FPRINTF (stderr, _("%s: illegal option -- %c\n"), argv[0], c);
778 FPRINTF (stderr, _("%s: invalid option -- %c\n"), argv[0], c);
782 /* Convenience. Treat POSIX -W foo same as long option --foo */
783 if (temp[0] == 'W' && temp[1] == ';')
786 const struct GNoption *p;
787 const struct GNoption *pfound = NULL;
793 /* This is an option that requires an argument. */
794 if (*nextchar != '\0')
797 /* If we end this ARGV-element by taking the rest as an arg,
798 * we must advance to the next element now. */
801 else if (GNoptind == argc)
805 /* 1003.2 specifies the format of this message. */
806 FPRINTF (stderr, _("%s: option requires an argument -- %c\n"),
809 if (optstring[0] == ':')
816 /* We already incremented `GNoptind' once;
817 * increment it again when taking next ARGV-elt as argument. */
818 GNoptarg = argv[GNoptind++];
820 /* GNoptarg is now the argument, see if it's in the
821 * table of longopts. */
823 for (nextchar = nameend = GNoptarg; *nameend && *nameend != '=';
827 /* Test all long options for either exact match
828 * or abbreviated matches. */
829 if (longopts != NULL)
830 for (p = longopts, option_index = 0; p->name; p++, option_index++)
831 if (!strncmp (p->name, nextchar, nameend - nextchar))
833 if ((unsigned int) (nameend - nextchar) == strlen (p->name))
835 /* Exact match found. */
837 indfound = option_index;
841 else if (pfound == NULL)
843 /* First nonexact match found. */
845 indfound = option_index;
848 /* Second or later nonexact match found. */
854 FPRINTF (stderr, _("%s: option `-W %s' is ambiguous\n"), argv[0],
856 nextchar += strlen (nextchar);
862 option_index = indfound;
865 /* Don't test has_arg with >, because some C compilers don't
866 * allow it to be used on enums. */
868 GNoptarg = nameend + 1;
872 FPRINTF (stderr, _("\
873 %s: option `-W %s' does not allow an argument\n"), argv[0], pfound->name);
875 nextchar += strlen (nextchar);
879 else if (pfound->has_arg == 1)
882 GNoptarg = argv[GNoptind++];
886 FPRINTF (stderr, _("%s: option `%s' requires an argument\n"),
887 argv[0], argv[GNoptind - 1]);
888 nextchar += strlen (nextchar);
889 return optstring[0] == ':' ? ':' : '?';
892 nextchar += strlen (nextchar);
894 *longind = option_index;
897 *(pfound->flag) = pfound->val;
903 return 'W'; /* Let the application handle it. */
909 /* This is an option that accepts an argument optionally. */
910 if (*nextchar != '\0')
921 /* This is an option that requires an argument. */
922 if (*nextchar != '\0')
925 /* If we end this ARGV-element by taking the rest as an arg,
926 * we must advance to the next element now. */
929 else if (GNoptind == argc)
933 /* 1003.2 specifies the format of this message. */
934 FPRINTF (stderr, _("%s: option requires an argument -- %c\n"),
937 if (optstring[0] == ':')
943 /* We already incremented `GNoptind' once;
944 * increment it again when taking next ARGV-elt as argument. */
945 GNoptarg = argv[GNoptind++];
954 GNgetopt_long (int argc, char *const *argv, const char *options,
955 const struct GNoption *long_options, int *opt_index)
957 return GN_getopt_internal (argc, argv, options, long_options, opt_index, 0);
960 /* ******************** now the GNUnet specific modifications... ********************* */
963 * Parse the command line.
965 * @param binaryOptions Name of application with option summary
966 * @param allOptions defined options and handlers
967 * @param argc number of arguments
968 * @param argv actual arguments
969 * @return index into argv with first non-option
970 * argument, or -1 on error
973 GNUNET_GETOPT_run (const char *binaryOptions,
974 const struct GNUNET_GETOPT_CommandLineOption *allOptions,
975 unsigned int argc, char *const *argv)
977 struct GNoption *long_options;
978 struct GNUNET_GETOPT_CommandLineProcessorContext clpc;
986 GNUNET_assert (argc > 0);
988 clpc.binaryName = argv[0];
989 clpc.binaryOptions = binaryOptions;
990 clpc.allOptions = allOptions;
994 while (allOptions[count].name != NULL)
996 long_options = GNUNET_malloc (sizeof (struct GNoption) * (count + 1));
997 shorts = GNUNET_malloc (count * 2 + 1);
999 for (i = 0; i < count; i++)
1001 long_options[i].name = allOptions[i].name;
1002 long_options[i].has_arg = allOptions[i].require_argument;
1003 long_options[i].flag = NULL;
1004 long_options[i].val = allOptions[i].shortName;
1005 shorts[spos++] = allOptions[i].shortName;
1006 if (allOptions[i].require_argument != 0)
1007 shorts[spos++] = ':';
1009 long_options[count].name = NULL;
1010 long_options[count].has_arg = 0;
1011 long_options[count].flag = NULL;
1012 long_options[count].val = '\0';
1013 shorts[spos] = '\0';
1015 /* main getopt loop */
1016 while (cont == GNUNET_OK)
1018 int option_index = 0;
1020 c = GNgetopt_long (argc, argv, shorts, long_options, &option_index);
1022 if (c == GNUNET_SYSERR)
1023 break; /* No more flags to process */
1025 for (i = 0; i < count; i++)
1027 clpc.currentArgument = GNoptind - 1;
1028 if ((char) c == allOptions[i].shortName)
1031 allOptions[i].processor (&clpc, allOptions[i].scls,
1032 allOptions[i].name, GNoptarg);
1038 FPRINTF (stderr, _("Use %s to get a list of options.\n"), "--help");
1039 cont = GNUNET_SYSERR;
1043 GNUNET_free (shorts);
1044 GNUNET_free (long_options);
1045 if (cont == GNUNET_SYSERR)
1046 return GNUNET_SYSERR;
1050 /* end of getopt.c */