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. */
205 my_index (const char *str,
217 /* If using GCC, we can safely declare strlen this way.
218 If not using GCC, it is ok not to declare it. */
220 /* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h.
221 That was relevant to code that was here before. */
222 #if !defined (__STDC__) || !__STDC__
223 /* gcc with -traditional declares the built-in strlen to return int,
224 and has done so at least since version 2.4.5. -- rms. */
226 strlen (const char *);
227 #endif /* not __STDC__ */
228 #endif /* __GNUC__ */
230 #endif /* not __GNU_LIBRARY__ */
232 /* Handle permutation of arguments. */
234 /* Describe the part of ARGV that contains non-options that have
235 been skipped. `first_nonopt' is the index in ARGV of the first of them;
236 `last_nonopt' is the index after the last of them. */
238 static int first_nonopt;
239 static int last_nonopt;
242 /* Bash 2.0 gives us an environment variable containing flags
243 indicating ARGV elements that should not be considered arguments. */
245 /* Defined in getopt_init.c */
246 extern char *__getopt_nonoption_flags;
248 static int nonoption_flags_max_len;
249 static int nonoption_flags_len;
251 static int original_argc;
252 static char *const *original_argv;
254 extern pid_t __libc_pid;
256 /* Make sure the environment variable bash 2.0 puts in the environment
257 is valid for the getopt call we must make sure that the ARGV passed
258 to getopt is that one passed to the process. */
259 static void GNUNET_UNUSED
260 store_args_and_env (int argc, char *const *argv)
262 /* XXX This is no good solution. We should rather copy the args so
263 * that we can compare them later. But we must not use malloc(3). */
264 original_argc = argc;
265 original_argv = argv;
268 text_set_element (__libc_subinit, store_args_and_env);
270 #define SWAP_FLAGS(ch1, ch2) \
271 if (nonoption_flags_len > 0) \
273 char __tmp = __getopt_nonoption_flags[ch1]; \
274 __getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2]; \
275 __getopt_nonoption_flags[ch2] = __tmp; \
278 #define SWAP_FLAGS(ch1, ch2)
281 /* Exchange two adjacent subsequences of ARGV.
282 One subsequence is elements [first_nonopt,last_nonopt)
283 which contains all the non-options that have been skipped so far.
284 The other is elements [last_nonopt,GNoptind), which contains all
285 the options processed since those non-options were skipped.
287 `first_nonopt' and `last_nonopt' are relocated so that they describe
288 the new indices of the non-options in ARGV after they are moved. */
290 #if defined (__STDC__) && __STDC__
296 exchange (char **argv)
298 int bottom = first_nonopt;
299 int middle = last_nonopt;
303 /* Exchange the shorter segment with the far end of the longer segment.
304 * That puts the shorter segment into the right place.
305 * It leaves the longer segment in the right place overall,
306 * but it consists of two parts that need to be swapped next. */
309 /* First make sure the handling of the `__getopt_nonoption_flags'
310 * string can work normally. Our top argument must be in the range
312 if (nonoption_flags_len > 0 && top >= nonoption_flags_max_len)
314 /* We must extend the array. The user plays games with us and
315 * presents new arguments. */
316 char *new_str = malloc (top + 1);
319 nonoption_flags_len = nonoption_flags_max_len = 0;
322 memcpy (new_str, __getopt_nonoption_flags, nonoption_flags_max_len);
323 memset (&new_str[nonoption_flags_max_len], '\0',
324 top + 1 - nonoption_flags_max_len);
325 nonoption_flags_max_len = top + 1;
326 __getopt_nonoption_flags = new_str;
331 while (top > middle && middle > bottom)
333 if (top - middle > middle - bottom)
335 /* Bottom segment is the short one. */
336 int len = middle - bottom;
339 /* Swap it with the top part of the top segment. */
340 for (i = 0; i < len; i++)
342 tem = argv[bottom + i];
343 argv[bottom + i] = argv[top - (middle - bottom) + i];
344 argv[top - (middle - bottom) + i] = tem;
345 SWAP_FLAGS (bottom + i, top - (middle - bottom) + i);
347 /* Exclude the moved bottom segment from further swapping. */
352 /* Top segment is the short one. */
353 int len = top - middle;
356 /* Swap it with the bottom part of the bottom segment. */
357 for (i = 0; i < len; i++)
359 tem = argv[bottom + i];
360 argv[bottom + i] = argv[middle + i];
361 argv[middle + i] = tem;
362 SWAP_FLAGS (bottom + i, middle + i);
364 /* Exclude the moved top segment from further swapping. */
369 /* Update records for the slots the non-options now occupy. */
371 first_nonopt += (GNoptind - last_nonopt);
372 last_nonopt = GNoptind;
375 /* Initialize the internal data when the first call is made. */
377 #if defined (__STDC__) && __STDC__
379 _getopt_initialize (int, char *const *, const char *);
382 _getopt_initialize (int argc,
384 const char *optstring)
386 /* Start processing options with ARGV-element 1 (since ARGV-element 0
387 * is the program name); the sequence of previously skipped
388 * non-option ARGV-elements is empty. */
390 first_nonopt = last_nonopt = GNoptind;
394 posixly_correct = getenv ("POSIXLY_CORRECT");
396 /* Determine how to handle the ordering of options and nonoptions. */
398 if (optstring[0] == '-')
400 ordering = RETURN_IN_ORDER;
403 else if (optstring[0] == '+')
405 ordering = REQUIRE_ORDER;
408 else if (posixly_correct != NULL)
409 ordering = REQUIRE_ORDER;
414 if (posixly_correct == NULL && argc == original_argc && argv == original_argv)
416 if (nonoption_flags_max_len == 0)
418 if (__getopt_nonoption_flags == NULL ||
419 __getopt_nonoption_flags[0] == '\0')
420 nonoption_flags_max_len = -1;
423 const char *orig_str = __getopt_nonoption_flags;
424 int len = nonoption_flags_max_len = strlen (orig_str);
426 if (nonoption_flags_max_len < argc)
427 nonoption_flags_max_len = argc;
428 __getopt_nonoption_flags = (char *) malloc (nonoption_flags_max_len);
429 if (__getopt_nonoption_flags == NULL)
430 nonoption_flags_max_len = -1;
433 memcpy (__getopt_nonoption_flags, orig_str, len);
434 memset (&__getopt_nonoption_flags[len], '\0',
435 nonoption_flags_max_len - len);
439 nonoption_flags_len = nonoption_flags_max_len;
442 nonoption_flags_len = 0;
448 /* Scan elements of ARGV (whose length is ARGC) for option characters
451 If an element of ARGV starts with '-', and is not exactly "-" or "--",
452 then it is an option element. The characters of this element
453 (aside from the initial '-') are option characters. If `getopt'
454 is called repeatedly, it returns successively each of the option characters
455 from each of the option elements.
457 If `getopt' finds another option character, it returns that character,
458 updating `GNoptind' and `nextchar' so that the next call to `getopt' can
459 resume the scan with the following option character or ARGV-element.
461 If there are no more option characters, `getopt' returns -1.
462 Then `GNoptind' is the index in ARGV of the first ARGV-element
463 that is not an option. (The ARGV-elements have been permuted
464 so that those that are not options now come last.)
466 OPTSTRING is a string containing the legitimate option characters.
467 If an option character is seen that is not listed in OPTSTRING,
468 return '?' after printing an error message. If you set `GNopterr' to
469 zero, the error message is suppressed but we still return '?'.
471 If a char in OPTSTRING is followed by a colon, that means it wants an arg,
472 so the following text in the same ARGV-element, or the text of the following
473 ARGV-element, is returned in `GNoptarg'. Two colons mean an option that
474 wants an optional arg; if there is text in the current ARGV-element,
475 it is returned in `GNoptarg', otherwise `GNoptarg' is set to zero.
477 If OPTSTRING starts with `-' or `+', it requests different methods of
478 handling the non-option ARGV-elements.
479 See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above.
481 Long-named options begin with `--' instead of `-'.
482 Their names may be abbreviated as long as the abbreviation is unique
483 or is an exact match for some defined option. If they have an
484 argument, it follows the option name in the same ARGV-element, separated
485 from the option name by a `=', or else the in next ARGV-element.
486 When `getopt' finds a long-named option, it returns 0 if that option's
487 `flag' field is nonzero, the value of the option's `val' field
488 if the `flag' field is zero.
490 The elements of ARGV aren't really const, because we GNUNET_CRYPTO_random_permute them.
491 But we pretend they're const in the prototype to be compatible
494 LONGOPTS is a vector of `struct GNoption' terminated by an
495 element containing a name which is zero.
497 LONGIND returns the index in LONGOPT of the long-named option found.
498 It is only valid when a long-named option has been found by the most
501 If LONG_ONLY is nonzero, '-' as well as '--' can introduce
502 long-named options. */
505 GN_getopt_internal (int argc, char *const *argv, const char *optstring,
506 const struct GNoption *longopts, int *longind,
509 static int __getopt_initialized = 0;
510 static int GNopterr = 1;
514 if (GNoptind == 0 || !__getopt_initialized)
517 GNoptind = 1; /* Don't scan ARGV[0], the program name. */
518 optstring = _getopt_initialize (argc, argv, optstring);
519 __getopt_initialized = 1;
522 /* Test whether ARGV[GNoptind] points to a non-option argument.
523 * Either it does not have option syntax, or there is an environment flag
524 * from the shell indicating it is not an option. The later information
525 * is only used when the used in the GNU libc. */
527 #define NONOPTION_P (argv[GNoptind][0] != '-' || argv[GNoptind][1] == '\0' \
528 || (GNoptind < nonoption_flags_len \
529 && __getopt_nonoption_flags[GNoptind] == '1'))
531 #define NONOPTION_P (argv[GNoptind][0] != '-' || argv[GNoptind][1] == '\0')
534 if (nextchar == NULL || *nextchar == '\0')
536 /* Advance to the next ARGV-element. */
538 /* Give FIRST_NONOPT & LAST_NONOPT rational values if GNoptind has been
539 * moved back by the user (who may also have changed the arguments). */
540 if (last_nonopt > GNoptind)
541 last_nonopt = GNoptind;
542 if (first_nonopt > GNoptind)
543 first_nonopt = GNoptind;
545 if (ordering == PERMUTE)
547 /* If we have just processed some options following some non-options,
548 * exchange them so that the options come first. */
550 if (first_nonopt != last_nonopt && last_nonopt != GNoptind)
551 exchange ((char **) argv);
552 else if (last_nonopt != GNoptind)
553 first_nonopt = GNoptind;
555 /* Skip any additional non-options
556 * and extend the range of non-options previously skipped. */
558 while (GNoptind < argc && NONOPTION_P)
560 last_nonopt = GNoptind;
563 /* The special ARGV-element `--' means premature end of options.
564 * Skip it like a null option,
565 * then exchange with previous non-options as if it were an option,
566 * then skip everything else like a non-option. */
567 if (GNoptind != argc && !strcmp (argv[GNoptind], "--"))
571 if (first_nonopt != last_nonopt && last_nonopt != GNoptind)
572 exchange ((char **) argv);
573 else if (first_nonopt == last_nonopt)
574 first_nonopt = GNoptind;
580 /* If we have done all the ARGV-elements, stop the scan
581 * and back over any non-options that we skipped and permuted. */
583 if (GNoptind == argc)
585 /* Set the next-arg-index to point at the non-options
586 * that we previously skipped, so the caller will digest them. */
587 if (first_nonopt != last_nonopt)
588 GNoptind = first_nonopt;
592 /* If we have come to a non-option and did not permute it,
593 * either stop the scan or describe it to the caller and pass it by. */
597 if (ordering == REQUIRE_ORDER)
599 GNoptarg = argv[GNoptind++];
603 /* We have found another option-ARGV-element.
604 * Skip the initial punctuation. */
607 (argv[GNoptind] + 1 + (longopts != NULL && argv[GNoptind][1] == '-'));
610 /* Decode the current option-ARGV-element. */
612 /* Check whether the ARGV-element is a long option.
614 * If long_only and the ARGV-element has the form "-f", where f is
615 * a valid short option, don't consider it an abbreviated form of
616 * a long option that starts with f. Otherwise there would be no
617 * way to give the -f short option.
619 * On the other hand, if there's a long option "fubar" and
620 * the ARGV-element is "-fu", do consider that an abbreviation of
621 * the long option, just like "--fu", and not "-f" with arg "u".
623 * This distinction seems to be the most useful approach. */
625 if (longopts != NULL &&
626 (argv[GNoptind][1] == '-' ||
628 (argv[GNoptind][2] || !my_index (optstring, argv[GNoptind][1])))))
631 const struct GNoption *p;
632 const struct GNoption *pfound = NULL;
638 for (nameend = nextchar; *nameend && *nameend != '='; nameend++)
641 /* Test all long options for either exact match
642 * or abbreviated matches. */
643 for (p = longopts, option_index = 0; p->name; p++, option_index++)
644 if (!strncmp (p->name, nextchar, nameend - nextchar))
646 if ((unsigned int) (nameend - nextchar) ==
647 (unsigned int) strlen (p->name))
649 /* Exact match found. */
651 indfound = option_index;
655 else if (pfound == NULL)
657 /* First nonexact match found. */
659 indfound = option_index;
662 /* Second or later nonexact match found. */
669 FPRINTF (stderr, _("%s: option `%s' is ambiguous\n"), argv[0],
671 nextchar += strlen (nextchar);
678 option_index = indfound;
682 /* Don't test has_arg with >, because some C compilers don't
683 * allow it to be used on enums. */
685 GNoptarg = nameend + 1;
690 if (argv[GNoptind - 1][1] == '-')
693 _("%s: option `--%s' does not allow an argument\n"),
694 argv[0], pfound->name);
696 /* +option or -option */
698 _("%s: option `%c%s' does not allow an argument\n"),
699 argv[0], argv[GNoptind - 1][0], pfound->name);
701 nextchar += strlen (nextchar);
705 else if (pfound->has_arg == 1)
709 GNoptarg = argv[GNoptind++];
715 FPRINTF (stderr, _("%s: option `%s' requires an argument\n"),
716 argv[0], argv[GNoptind - 1]);
718 nextchar += strlen (nextchar);
719 return (optstring[0] == ':') ? ':' : '?';
722 nextchar += strlen (nextchar);
724 *longind = option_index;
727 *(pfound->flag) = pfound->val;
733 /* Can't find it as a long option. If this is not getopt_long_only,
734 * or the option starts with '--' or is not a valid short
735 * option, then it's an error.
736 * Otherwise interpret it as a short option. */
737 if (!long_only || argv[GNoptind][1] == '-' ||
738 my_index (optstring, *nextchar) == NULL)
742 if (argv[GNoptind][1] == '-')
744 FPRINTF (stderr, _("%s: unrecognized option `--%s'\n"), argv[0],
747 /* +option or -option */
748 FPRINTF (stderr, _("%s: unrecognized option `%c%s'\n"), argv[0],
749 argv[GNoptind][0], nextchar);
751 nextchar = (char *) "";
757 /* Look at and handle the next short option-character. */
760 char c = *nextchar++;
761 char *temp = my_index (optstring, c);
763 /* Increment `GNoptind' when we start to process its last character. */
764 if (*nextchar == '\0')
767 if (temp == NULL || c == ':')
772 /* 1003.2 specifies the format of this message. */
773 FPRINTF (stderr, _("%s: illegal option -- %c\n"), argv[0], c);
775 FPRINTF (stderr, _("%s: invalid option -- %c\n"), argv[0], c);
779 /* Convenience. Treat POSIX -W foo same as long option --foo */
780 if (temp[0] == 'W' && temp[1] == ';')
783 const struct GNoption *p;
784 const struct GNoption *pfound = NULL;
790 /* This is an option that requires an argument. */
791 if (*nextchar != '\0')
794 /* If we end this ARGV-element by taking the rest as an arg,
795 * we must advance to the next element now. */
798 else if (GNoptind == argc)
802 /* 1003.2 specifies the format of this message. */
803 FPRINTF (stderr, _("%s: option requires an argument -- %c\n"),
806 if (optstring[0] == ':')
813 /* We already incremented `GNoptind' once;
814 * increment it again when taking next ARGV-elt as argument. */
815 GNoptarg = argv[GNoptind++];
817 /* GNoptarg is now the argument, see if it's in the
818 * table of longopts. */
820 for (nextchar = nameend = GNoptarg; *nameend && *nameend != '=';
824 /* Test all long options for either exact match
825 * or abbreviated matches. */
826 if (longopts != NULL)
827 for (p = longopts, option_index = 0; p->name; p++, option_index++)
828 if (!strncmp (p->name, nextchar, nameend - nextchar))
830 if ((unsigned int) (nameend - nextchar) == strlen (p->name))
832 /* Exact match found. */
834 indfound = option_index;
838 else if (pfound == NULL)
840 /* First nonexact match found. */
842 indfound = option_index;
845 /* Second or later nonexact match found. */
851 FPRINTF (stderr, _("%s: option `-W %s' is ambiguous\n"), argv[0],
853 nextchar += strlen (nextchar);
859 option_index = indfound;
862 /* Don't test has_arg with >, because some C compilers don't
863 * allow it to be used on enums. */
865 GNoptarg = nameend + 1;
869 FPRINTF (stderr, _("\
870 %s: option `-W %s' does not allow an argument\n"), argv[0], pfound->name);
872 nextchar += strlen (nextchar);
876 else if (pfound->has_arg == 1)
879 GNoptarg = argv[GNoptind++];
883 FPRINTF (stderr, _("%s: option `%s' requires an argument\n"),
884 argv[0], argv[GNoptind - 1]);
885 nextchar += strlen (nextchar);
886 return optstring[0] == ':' ? ':' : '?';
889 nextchar += strlen (nextchar);
891 *longind = option_index;
894 *(pfound->flag) = pfound->val;
900 return 'W'; /* Let the application handle it. */
906 /* This is an option that accepts an argument optionally. */
907 if (*nextchar != '\0')
918 /* This is an option that requires an argument. */
919 if (*nextchar != '\0')
922 /* If we end this ARGV-element by taking the rest as an arg,
923 * we must advance to the next element now. */
926 else if (GNoptind == argc)
930 /* 1003.2 specifies the format of this message. */
931 FPRINTF (stderr, _("%s: option requires an argument -- %c\n"),
934 if (optstring[0] == ':')
940 /* We already incremented `GNoptind' once;
941 * increment it again when taking next ARGV-elt as argument. */
942 GNoptarg = argv[GNoptind++];
951 GNgetopt_long (int argc, char *const *argv, const char *options,
952 const struct GNoption *long_options, int *opt_index)
954 return GN_getopt_internal (argc, argv, options, long_options, opt_index, 0);
957 /* ******************** now the GNUnet specific modifications... ********************* */
960 * Parse the command line.
962 * @param binaryOptions Name of application with option summary
963 * @param allOptions defined options and handlers
964 * @param argc number of arguments
965 * @param argv actual arguments
966 * @return index into argv with first non-option
967 * argument, or -1 on error
970 GNUNET_GETOPT_run (const char *binaryOptions,
971 const struct GNUNET_GETOPT_CommandLineOption *allOptions,
972 unsigned int argc, char *const *argv)
974 struct GNoption *long_options;
975 struct GNUNET_GETOPT_CommandLineProcessorContext clpc;
983 GNUNET_assert (argc > 0);
985 clpc.binaryName = argv[0];
986 clpc.binaryOptions = binaryOptions;
987 clpc.allOptions = allOptions;
991 while (allOptions[count].name != NULL)
993 long_options = GNUNET_malloc (sizeof (struct GNoption) * (count + 1));
994 shorts = GNUNET_malloc (count * 2 + 1);
996 for (i = 0; i < count; i++)
998 long_options[i].name = allOptions[i].name;
999 long_options[i].has_arg = allOptions[i].require_argument;
1000 long_options[i].flag = NULL;
1001 long_options[i].val = allOptions[i].shortName;
1002 shorts[spos++] = allOptions[i].shortName;
1003 if (allOptions[i].require_argument != 0)
1004 shorts[spos++] = ':';
1006 long_options[count].name = NULL;
1007 long_options[count].has_arg = 0;
1008 long_options[count].flag = NULL;
1009 long_options[count].val = '\0';
1010 shorts[spos] = '\0';
1012 /* main getopt loop */
1013 while (cont == GNUNET_OK)
1015 int option_index = 0;
1017 c = GNgetopt_long (argc, argv, shorts, long_options, &option_index);
1019 if (c == GNUNET_SYSERR)
1020 break; /* No more flags to process */
1022 for (i = 0; i < count; i++)
1024 clpc.currentArgument = GNoptind - 1;
1025 if ((char) c == allOptions[i].shortName)
1028 allOptions[i].processor (&clpc, allOptions[i].scls,
1029 allOptions[i].name, GNoptarg);
1035 FPRINTF (stderr, _("Use %s to get a list of options.\n"), "--help");
1036 cont = GNUNET_SYSERR;
1040 GNUNET_free (shorts);
1041 GNUNET_free (long_options);
1042 if (cont == GNUNET_SYSERR)
1043 return GNUNET_SYSERR;
1047 /* end of getopt.c */