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 #if defined (WIN32) && !defined (__CYGWIN32__)
53 /* It's not Unix, really. See? Capital letters. */
55 #define getpid() GetCurrentProcessId()
59 /* This is for other GNU distributions with internationalized messages.
60 When compiling libc, the _ macro is predefined. */
63 #define _(msgid) gettext (msgid)
65 #define _(msgid) (msgid)
69 /* Describe the long-named options requested by the application.
70 The LONG_OPTIONS argument to getopt_long or getopt_long_only is a vector
71 of `struct GNoption' terminated by an element containing a name which is
74 The field `has_arg' is:
75 no_argument (or 0) if the option does not take an argument,
76 required_argument (or 1) if the option requires an argument,
77 optional_argument (or 2) if the option takes an optional argument.
79 If the field `flag' is not NULL, it points to a variable that is set
80 to the value given in the field `val' when the option is found, but
81 left unchanged if the option is not found.
83 To have a long-named option do something other than set an `int' to
84 a compiled-in constant, such as set a value from `GNoptarg', set the
85 option's `flag' field to zero and its `val' field to a nonzero
86 value (the equivalent single-letter option character, if there is
87 one). For long options that have a zero `flag' field, `getopt'
88 returns the contents of the `val' field. */
93 /* has_arg can't be an enum because some compilers complain about
94 * type mismatches in all the code that assumes it is an int. */
101 /* This version of `getopt' appears to the caller like standard Unix `getopt'
102 but it behaves differently for the user, since it allows the user
103 to intersperse the options with the other arguments.
105 As `getopt' works, it permutes the elements of ARGV so that,
106 when it is done, all the options precede everything else. Thus
107 all application programs are extended to handle flexible argument order.
109 Setting the environment variable POSIXLY_CORRECT disables permutation.
110 Then the behavior is completely standard.
112 GNU application programs can use a third alternative mode in which
113 they can distinguish the relative order of options and other arguments. */
115 /* For communication from `getopt' to the caller.
116 When `getopt' finds an option that takes an argument,
117 the argument value is returned here.
118 Also, when `ordering' is RETURN_IN_ORDER,
119 each non-option ARGV-element is returned here. */
121 static char *GNoptarg = NULL;
123 /* Index in ARGV of the next element to be scanned.
124 This is used for communication to and from the caller
125 and for communication between successive calls to `getopt'.
127 On entry to `getopt', zero means this is the first call; initialize.
129 When `getopt' returns -1, this is the index of the first of the
130 non-option elements that the caller should itself scan.
132 Otherwise, `GNoptind' communicates from one call to the next
133 how much of ARGV has been scanned so far. */
135 /* 1003.2 says this must be 1 before any call. */
136 static int GNoptind = 1;
138 /* The next char to be scanned in the option-element
139 in which the last option character we returned was found.
140 This allows us to pick up the scan where we left off.
142 If this is zero, or a null string, it means resume the scan
143 by advancing to the next ARGV-element. */
145 static char *nextchar;
148 /* Describe how to deal with options that follow non-option ARGV-elements.
150 If the caller did not specify anything,
151 the default is REQUIRE_ORDER if the environment variable
152 POSIXLY_CORRECT is defined, PERMUTE otherwise.
154 REQUIRE_ORDER means don't recognize them as options;
155 stop option processing when the first non-option is seen.
156 This is what Unix does.
157 This mode of operation is selected by either setting the environment
158 variable POSIXLY_CORRECT, or using `+' as the first character
159 of the list of option characters.
161 PERMUTE is the default. We GNUNET_CRYPTO_random_permute the contents of ARGV as we scan,
162 so that eventually all the non-options are at the end. This allows options
163 to be given in any order, even with programs that were not written to
166 RETURN_IN_ORDER is an option available to programs that were written
167 to expect GNoptions and other ARGV-elements in any order and that care about
168 the ordering of the two. We describe each non-option ARGV-element
169 as if it were the argument of an option with character code 1.
170 Using `-' as the first character of the list of option characters
171 selects this mode of operation.
173 The special argument `--' forces an end of option-scanning regardless
174 of the value of `ordering'. In the case of RETURN_IN_ORDER, only
175 `--' can cause `getopt' to return -1 with `GNoptind' != ARGC. */
179 REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER
182 /* Value of POSIXLY_CORRECT environment variable. */
183 static char *posixly_correct;
185 #ifdef __GNU_LIBRARY__
186 /* We want to avoid inclusion of string.h with non-GNU libraries
187 because there are many ways it can cause trouble.
188 On some systems, it contains special magic macros that don't work
191 #define my_index strchr
194 /* Avoid depending on library functions or files
195 whose names are inconsistent. */
214 /* If using GCC, we can safely declare strlen this way.
215 If not using GCC, it is ok not to declare it. */
217 /* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h.
218 That was relevant to code that was here before. */
219 #if !defined (__STDC__) || !__STDC__
220 /* gcc with -traditional declares the built-in strlen to return int,
221 and has done so at least since version 2.4.5. -- rms. */
223 strlen (const char *);
224 #endif /* not __STDC__ */
225 #endif /* __GNUC__ */
227 #endif /* not __GNU_LIBRARY__ */
229 /* Handle permutation of arguments. */
231 /* Describe the part of ARGV that contains non-options that have
232 been skipped. `first_nonopt' is the index in ARGV of the first of them;
233 `last_nonopt' is the index after the last of them. */
235 static int first_nonopt;
236 static int last_nonopt;
239 /* Bash 2.0 gives us an environment variable containing flags
240 indicating ARGV elements that should not be considered arguments. */
242 /* Defined in getopt_init.c */
243 extern char *__getopt_nonoption_flags;
245 static int nonoption_flags_max_len;
246 static int nonoption_flags_len;
248 static int original_argc;
249 static char *const *original_argv;
251 extern pid_t __libc_pid;
253 /* Make sure the environment variable bash 2.0 puts in the environment
254 is valid for the getopt call we must make sure that the ARGV passed
255 to getopt is that one passed to the process. */
257 __attribute__ ((unused)) store_args_and_env (int argc, char *const *argv)
259 /* XXX This is no good solution. We should rather copy the args so
260 * that we can compare them later. But we must not use malloc(3). */
261 original_argc = argc;
262 original_argv = argv;
265 text_set_element (__libc_subinit, store_args_and_env);
267 #define SWAP_FLAGS(ch1, ch2) \
268 if (nonoption_flags_len > 0) \
270 char __tmp = __getopt_nonoption_flags[ch1]; \
271 __getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2]; \
272 __getopt_nonoption_flags[ch2] = __tmp; \
275 #define SWAP_FLAGS(ch1, ch2)
278 /* Exchange two adjacent subsequences of ARGV.
279 One subsequence is elements [first_nonopt,last_nonopt)
280 which contains all the non-options that have been skipped so far.
281 The other is elements [last_nonopt,GNoptind), which contains all
282 the options processed since those non-options were skipped.
284 `first_nonopt' and `last_nonopt' are relocated so that they describe
285 the new indices of the non-options in ARGV after they are moved. */
287 #if defined (__STDC__) && __STDC__
296 int bottom = first_nonopt;
297 int middle = last_nonopt;
301 /* Exchange the shorter segment with the far end of the longer segment.
302 * That puts the shorter segment into the right place.
303 * It leaves the longer segment in the right place overall,
304 * but it consists of two parts that need to be swapped next. */
307 /* First make sure the handling of the `__getopt_nonoption_flags'
308 * string can work normally. Our top argument must be in the range
310 if (nonoption_flags_len > 0 && top >= nonoption_flags_max_len)
312 /* We must extend the array. The user plays games with us and
313 * presents new arguments. */
314 char *new_str = malloc (top + 1);
317 nonoption_flags_len = nonoption_flags_max_len = 0;
320 memcpy (new_str, __getopt_nonoption_flags, nonoption_flags_max_len);
321 memset (&new_str[nonoption_flags_max_len], '\0',
322 top + 1 - nonoption_flags_max_len);
323 nonoption_flags_max_len = top + 1;
324 __getopt_nonoption_flags = new_str;
329 while (top > middle && middle > bottom)
331 if (top - middle > middle - bottom)
333 /* Bottom segment is the short one. */
334 int len = middle - bottom;
337 /* Swap it with the top part of the top segment. */
338 for (i = 0; i < len; i++)
340 tem = argv[bottom + i];
341 argv[bottom + i] = argv[top - (middle - bottom) + i];
342 argv[top - (middle - bottom) + i] = tem;
343 SWAP_FLAGS (bottom + i, top - (middle - bottom) + i);
345 /* Exclude the moved bottom segment from further swapping. */
350 /* Top segment is the short one. */
351 int len = top - middle;
354 /* Swap it with the bottom part of the bottom segment. */
355 for (i = 0; i < len; i++)
357 tem = argv[bottom + i];
358 argv[bottom + i] = argv[middle + i];
359 argv[middle + i] = tem;
360 SWAP_FLAGS (bottom + i, middle + i);
362 /* Exclude the moved top segment from further swapping. */
367 /* Update records for the slots the non-options now occupy. */
369 first_nonopt += (GNoptind - last_nonopt);
370 last_nonopt = GNoptind;
373 /* Initialize the internal data when the first call is made. */
375 #if defined (__STDC__) && __STDC__
377 _getopt_initialize (int, char *const *, const char *);
380 _getopt_initialize (argc, argv, optstring)
383 const char *optstring;
385 /* Start processing options with ARGV-element 1 (since ARGV-element 0
386 * is the program name); the sequence of previously skipped
387 * non-option ARGV-elements is empty. */
389 first_nonopt = last_nonopt = GNoptind;
393 posixly_correct = getenv ("POSIXLY_CORRECT");
395 /* Determine how to handle the ordering of options and nonoptions. */
397 if (optstring[0] == '-')
399 ordering = RETURN_IN_ORDER;
402 else if (optstring[0] == '+')
404 ordering = REQUIRE_ORDER;
407 else if (posixly_correct != NULL)
408 ordering = REQUIRE_ORDER;
413 if (posixly_correct == NULL && argc == original_argc && argv == original_argv)
415 if (nonoption_flags_max_len == 0)
417 if (__getopt_nonoption_flags == NULL ||
418 __getopt_nonoption_flags[0] == '\0')
419 nonoption_flags_max_len = -1;
422 const char *orig_str = __getopt_nonoption_flags;
423 int len = nonoption_flags_max_len = strlen (orig_str);
425 if (nonoption_flags_max_len < argc)
426 nonoption_flags_max_len = argc;
427 __getopt_nonoption_flags = (char *) malloc (nonoption_flags_max_len);
428 if (__getopt_nonoption_flags == NULL)
429 nonoption_flags_max_len = -1;
432 memcpy (__getopt_nonoption_flags, orig_str, len);
433 memset (&__getopt_nonoption_flags[len], '\0',
434 nonoption_flags_max_len - len);
438 nonoption_flags_len = nonoption_flags_max_len;
441 nonoption_flags_len = 0;
447 /* Scan elements of ARGV (whose length is ARGC) for option characters
450 If an element of ARGV starts with '-', and is not exactly "-" or "--",
451 then it is an option element. The characters of this element
452 (aside from the initial '-') are option characters. If `getopt'
453 is called repeatedly, it returns successively each of the option characters
454 from each of the option elements.
456 If `getopt' finds another option character, it returns that character,
457 updating `GNoptind' and `nextchar' so that the next call to `getopt' can
458 resume the scan with the following option character or ARGV-element.
460 If there are no more option characters, `getopt' returns -1.
461 Then `GNoptind' is the index in ARGV of the first ARGV-element
462 that is not an option. (The ARGV-elements have been permuted
463 so that those that are not options now come last.)
465 OPTSTRING is a string containing the legitimate option characters.
466 If an option character is seen that is not listed in OPTSTRING,
467 return '?' after printing an error message. If you set `GNopterr' to
468 zero, the error message is suppressed but we still return '?'.
470 If a char in OPTSTRING is followed by a colon, that means it wants an arg,
471 so the following text in the same ARGV-element, or the text of the following
472 ARGV-element, is returned in `GNoptarg'. Two colons mean an option that
473 wants an optional arg; if there is text in the current ARGV-element,
474 it is returned in `GNoptarg', otherwise `GNoptarg' is set to zero.
476 If OPTSTRING starts with `-' or `+', it requests different methods of
477 handling the non-option ARGV-elements.
478 See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above.
480 Long-named options begin with `--' instead of `-'.
481 Their names may be abbreviated as long as the abbreviation is unique
482 or is an exact match for some defined option. If they have an
483 argument, it follows the option name in the same ARGV-element, separated
484 from the option name by a `=', or else the in next ARGV-element.
485 When `getopt' finds a long-named option, it returns 0 if that option's
486 `flag' field is nonzero, the value of the option's `val' field
487 if the `flag' field is zero.
489 The elements of ARGV aren't really const, because we GNUNET_CRYPTO_random_permute them.
490 But we pretend they're const in the prototype to be compatible
493 LONGOPTS is a vector of `struct GNoption' terminated by an
494 element containing a name which is zero.
496 LONGIND returns the index in LONGOPT of the long-named option found.
497 It is only valid when a long-named option has been found by the most
500 If LONG_ONLY is nonzero, '-' as well as '--' can introduce
501 long-named options. */
504 GN_getopt_internal (int argc, char *const *argv, const char *optstring,
505 const struct GNoption *longopts, int *longind,
508 static int __getopt_initialized = 0;
509 static int GNopterr = 1;
513 if (GNoptind == 0 || !__getopt_initialized)
516 GNoptind = 1; /* Don't scan ARGV[0], the program name. */
517 optstring = _getopt_initialize (argc, argv, optstring);
518 __getopt_initialized = 1;
521 /* Test whether ARGV[GNoptind] points to a non-option argument.
522 * Either it does not have option syntax, or there is an environment flag
523 * from the shell indicating it is not an option. The later information
524 * is only used when the used in the GNU libc. */
526 #define NONOPTION_P (argv[GNoptind][0] != '-' || argv[GNoptind][1] == '\0' \
527 || (GNoptind < nonoption_flags_len \
528 && __getopt_nonoption_flags[GNoptind] == '1'))
530 #define NONOPTION_P (argv[GNoptind][0] != '-' || argv[GNoptind][1] == '\0')
533 if (nextchar == NULL || *nextchar == '\0')
535 /* Advance to the next ARGV-element. */
537 /* Give FIRST_NONOPT & LAST_NONOPT rational values if GNoptind has been
538 * moved back by the user (who may also have changed the arguments). */
539 if (last_nonopt > GNoptind)
540 last_nonopt = GNoptind;
541 if (first_nonopt > GNoptind)
542 first_nonopt = GNoptind;
544 if (ordering == PERMUTE)
546 /* If we have just processed some options following some non-options,
547 * exchange them so that the options come first. */
549 if (first_nonopt != last_nonopt && last_nonopt != GNoptind)
550 exchange ((char **) argv);
551 else if (last_nonopt != GNoptind)
552 first_nonopt = GNoptind;
554 /* Skip any additional non-options
555 * and extend the range of non-options previously skipped. */
557 while (GNoptind < argc && NONOPTION_P)
559 last_nonopt = GNoptind;
562 /* The special ARGV-element `--' means premature end of options.
563 * Skip it like a null option,
564 * then exchange with previous non-options as if it were an option,
565 * then skip everything else like a non-option. */
566 if (GNoptind != argc && !strcmp (argv[GNoptind], "--"))
570 if (first_nonopt != last_nonopt && last_nonopt != GNoptind)
571 exchange ((char **) argv);
572 else if (first_nonopt == last_nonopt)
573 first_nonopt = GNoptind;
579 /* If we have done all the ARGV-elements, stop the scan
580 * and back over any non-options that we skipped and permuted. */
582 if (GNoptind == argc)
584 /* Set the next-arg-index to point at the non-options
585 * that we previously skipped, so the caller will digest them. */
586 if (first_nonopt != last_nonopt)
587 GNoptind = first_nonopt;
591 /* If we have come to a non-option and did not permute it,
592 * either stop the scan or describe it to the caller and pass it by. */
596 if (ordering == REQUIRE_ORDER)
598 GNoptarg = argv[GNoptind++];
602 /* We have found another option-ARGV-element.
603 * Skip the initial punctuation. */
606 (argv[GNoptind] + 1 + (longopts != NULL && argv[GNoptind][1] == '-'));
609 /* Decode the current option-ARGV-element. */
611 /* Check whether the ARGV-element is a long option.
613 * If long_only and the ARGV-element has the form "-f", where f is
614 * a valid short option, don't consider it an abbreviated form of
615 * a long option that starts with f. Otherwise there would be no
616 * way to give the -f short option.
618 * On the other hand, if there's a long option "fubar" and
619 * the ARGV-element is "-fu", do consider that an abbreviation of
620 * the long option, just like "--fu", and not "-f" with arg "u".
622 * This distinction seems to be the most useful approach. */
624 if (longopts != NULL &&
625 (argv[GNoptind][1] == '-' ||
627 (argv[GNoptind][2] || !my_index (optstring, argv[GNoptind][1])))))
630 const struct GNoption *p;
631 const struct GNoption *pfound = NULL;
637 for (nameend = nextchar; *nameend && *nameend != '='; nameend++)
640 /* Test all long options for either exact match
641 * or abbreviated matches. */
642 for (p = longopts, option_index = 0; p->name; p++, option_index++)
643 if (!strncmp (p->name, nextchar, nameend - nextchar))
645 if ((unsigned int) (nameend - nextchar) ==
646 (unsigned int) strlen (p->name))
648 /* Exact match found. */
650 indfound = option_index;
654 else if (pfound == NULL)
656 /* First nonexact match found. */
658 indfound = option_index;
661 /* Second or later nonexact match found. */
668 fprintf (stderr, _("%s: option `%s' is ambiguous\n"), argv[0],
670 nextchar += strlen (nextchar);
677 option_index = indfound;
681 /* Don't test has_arg with >, because some C compilers don't
682 * allow it to be used on enums. */
684 GNoptarg = nameend + 1;
689 if (argv[GNoptind - 1][1] == '-')
692 _("%s: option `--%s' does not allow an argument\n"),
693 argv[0], pfound->name);
695 /* +option or -option */
697 _("%s: option `%c%s' does not allow an argument\n"),
698 argv[0], argv[GNoptind - 1][0], pfound->name);
700 nextchar += strlen (nextchar);
704 else if (pfound->has_arg == 1)
708 GNoptarg = argv[GNoptind++];
714 fprintf (stderr, _("%s: option `%s' requires an argument\n"),
715 argv[0], argv[GNoptind - 1]);
717 nextchar += strlen (nextchar);
718 return (optstring[0] == ':') ? ':' : '?';
721 nextchar += strlen (nextchar);
723 *longind = option_index;
726 *(pfound->flag) = pfound->val;
732 /* Can't find it as a long option. If this is not getopt_long_only,
733 * or the option starts with '--' or is not a valid short
734 * option, then it's an error.
735 * Otherwise interpret it as a short option. */
736 if (!long_only || argv[GNoptind][1] == '-' ||
737 my_index (optstring, *nextchar) == NULL)
741 if (argv[GNoptind][1] == '-')
743 fprintf (stderr, _("%s: unrecognized option `--%s'\n"), argv[0],
746 /* +option or -option */
747 fprintf (stderr, _("%s: unrecognized option `%c%s'\n"), argv[0],
748 argv[GNoptind][0], nextchar);
750 nextchar = (char *) "";
756 /* Look at and handle the next short option-character. */
759 char c = *nextchar++;
760 char *temp = my_index (optstring, c);
762 /* Increment `GNoptind' when we start to process its last character. */
763 if (*nextchar == '\0')
766 if (temp == NULL || c == ':')
771 /* 1003.2 specifies the format of this message. */
772 fprintf (stderr, _("%s: illegal option -- %c\n"), argv[0], c);
774 fprintf (stderr, _("%s: invalid option -- %c\n"), argv[0], c);
778 /* Convenience. Treat POSIX -W foo same as long option --foo */
779 if (temp[0] == 'W' && temp[1] == ';')
782 const struct GNoption *p;
783 const struct GNoption *pfound = NULL;
789 /* This is an option that requires an argument. */
790 if (*nextchar != '\0')
793 /* If we end this ARGV-element by taking the rest as an arg,
794 * we must advance to the next element now. */
797 else if (GNoptind == argc)
801 /* 1003.2 specifies the format of this message. */
802 fprintf (stderr, _("%s: option requires an argument -- %c\n"),
805 if (optstring[0] == ':')
812 /* We already incremented `GNoptind' once;
813 * increment it again when taking next ARGV-elt as argument. */
814 GNoptarg = argv[GNoptind++];
816 /* GNoptarg is now the argument, see if it's in the
817 * table of longopts. */
819 for (nextchar = nameend = GNoptarg; *nameend && *nameend != '=';
823 /* Test all long options for either exact match
824 * or abbreviated matches. */
825 if (longopts != NULL)
826 for (p = longopts, option_index = 0; p->name; p++, option_index++)
827 if (!strncmp (p->name, nextchar, nameend - nextchar))
829 if ((unsigned int) (nameend - nextchar) == strlen (p->name))
831 /* Exact match found. */
833 indfound = option_index;
837 else if (pfound == NULL)
839 /* First nonexact match found. */
841 indfound = option_index;
844 /* Second or later nonexact match found. */
850 fprintf (stderr, _("%s: option `-W %s' is ambiguous\n"), argv[0],
852 nextchar += strlen (nextchar);
858 option_index = indfound;
861 /* Don't test has_arg with >, because some C compilers don't
862 * allow it to be used on enums. */
864 GNoptarg = nameend + 1;
868 fprintf (stderr, _("\
869 %s: option `-W %s' does not allow an argument\n"), argv[0], pfound->name);
871 nextchar += strlen (nextchar);
875 else if (pfound->has_arg == 1)
878 GNoptarg = argv[GNoptind++];
882 fprintf (stderr, _("%s: option `%s' requires an argument\n"),
883 argv[0], argv[GNoptind - 1]);
884 nextchar += strlen (nextchar);
885 return optstring[0] == ':' ? ':' : '?';
888 nextchar += strlen (nextchar);
890 *longind = option_index;
893 *(pfound->flag) = pfound->val;
899 return 'W'; /* Let the application handle it. */
905 /* This is an option that accepts an argument optionally. */
906 if (*nextchar != '\0')
917 /* This is an option that requires an argument. */
918 if (*nextchar != '\0')
921 /* If we end this ARGV-element by taking the rest as an arg,
922 * we must advance to the next element now. */
925 else if (GNoptind == argc)
929 /* 1003.2 specifies the format of this message. */
930 fprintf (stderr, _("%s: option requires an argument -- %c\n"),
933 if (optstring[0] == ':')
939 /* We already incremented `GNoptind' once;
940 * increment it again when taking next ARGV-elt as argument. */
941 GNoptarg = argv[GNoptind++];
950 GNgetopt_long (int argc, char *const *argv, const char *options,
951 const struct GNoption *long_options, int *opt_index)
953 return GN_getopt_internal (argc, argv, options, long_options, opt_index, 0);
956 /* ******************** now the GNUnet specific modifications... ********************* */
959 * Parse the command line.
961 * @param binaryOptions Name of application with option summary
962 * @param allOptions defined options and handlers
963 * @param argc number of arguments
964 * @param argv actual arguments
965 * @return index into argv with first non-option
966 * argument, or -1 on error
969 GNUNET_GETOPT_run (const char *binaryOptions,
970 const struct GNUNET_GETOPT_CommandLineOption *allOptions,
971 unsigned int argc, char *const *argv)
973 struct GNoption *long_options;
974 struct GNUNET_GETOPT_CommandLineProcessorContext clpc;
982 GNUNET_assert (argc > 0);
984 clpc.binaryName = argv[0];
985 clpc.binaryOptions = binaryOptions;
986 clpc.allOptions = allOptions;
990 while (allOptions[count].name != NULL)
992 long_options = GNUNET_malloc (sizeof (struct GNoption) * (count + 1));
993 shorts = GNUNET_malloc (count * 2 + 1);
995 for (i = 0; i < count; i++)
997 long_options[i].name = allOptions[i].name;
998 long_options[i].has_arg = allOptions[i].require_argument;
999 long_options[i].flag = NULL;
1000 long_options[i].val = allOptions[i].shortName;
1001 shorts[spos++] = allOptions[i].shortName;
1002 if (allOptions[i].require_argument != 0)
1003 shorts[spos++] = ':';
1005 long_options[count].name = NULL;
1006 long_options[count].has_arg = 0;
1007 long_options[count].flag = NULL;
1008 long_options[count].val = '\0';
1009 shorts[spos] = '\0';
1011 /* main getopt loop */
1012 while (cont == GNUNET_OK)
1014 int option_index = 0;
1016 c = GNgetopt_long (argc, argv, shorts, long_options, &option_index);
1018 if (c == GNUNET_SYSERR)
1019 break; /* No more flags to process */
1021 for (i = 0; i < count; i++)
1023 clpc.currentArgument = GNoptind - 1;
1024 if ((char) c == allOptions[i].shortName)
1027 allOptions[i].processor (&clpc, allOptions[i].scls,
1028 allOptions[i].name, GNoptarg);
1034 fprintf (stderr, _("Use --help to get a list of options.\n"));
1035 cont = GNUNET_SYSERR;
1039 GNUNET_free (shorts);
1040 GNUNET_free (long_options);
1041 if (cont == GNUNET_SYSERR)
1042 return GNUNET_SYSERR;
1046 /* end of getopt.c */