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"
47 # if HAVE_STRING_H - 0
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. */
61 # ifdef HAVE_LIBINTL_H
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. */
213 /* If using GCC, we can safely declare strlen this way.
214 If not using GCC, it is ok not to declare it. */
216 /* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h.
217 That was relevant to code that was here before. */
218 #if !defined (__STDC__) || !__STDC__
219 /* gcc with -traditional declares the built-in strlen to return int,
220 and has done so at least since version 2.4.5. -- rms. */
221 extern int strlen (const char *);
222 #endif /* not __STDC__ */
223 #endif /* __GNUC__ */
225 #endif /* not __GNU_LIBRARY__ */
227 /* Handle permutation of arguments. */
229 /* Describe the part of ARGV that contains non-options that have
230 been skipped. `first_nonopt' is the index in ARGV of the first of them;
231 `last_nonopt' is the index after the last of them. */
233 static int first_nonopt;
234 static int last_nonopt;
237 /* Bash 2.0 gives us an environment variable containing flags
238 indicating ARGV elements that should not be considered arguments. */
240 /* Defined in getopt_init.c */
241 extern char *__getopt_nonoption_flags;
243 static int nonoption_flags_max_len;
244 static int nonoption_flags_len;
246 static int original_argc;
247 static char *const *original_argv;
249 extern pid_t __libc_pid;
251 /* Make sure the environment variable bash 2.0 puts in the environment
252 is valid for the getopt call we must make sure that the ARGV passed
253 to getopt is that one passed to the process. */
255 __attribute__ ((unused)) store_args_and_env (int argc, char *const *argv)
257 /* XXX This is no good solution. We should rather copy the args so
258 that we can compare them later. But we must not use malloc(3). */
259 original_argc = argc;
260 original_argv = argv;
263 text_set_element (__libc_subinit, store_args_and_env);
265 # define SWAP_FLAGS(ch1, ch2) \
266 if (nonoption_flags_len > 0) \
268 char __tmp = __getopt_nonoption_flags[ch1]; \
269 __getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2]; \
270 __getopt_nonoption_flags[ch2] = __tmp; \
273 # define SWAP_FLAGS(ch1, ch2)
276 /* Exchange two adjacent subsequences of ARGV.
277 One subsequence is elements [first_nonopt,last_nonopt)
278 which contains all the non-options that have been skipped so far.
279 The other is elements [last_nonopt,GNoptind), which contains all
280 the options processed since those non-options were skipped.
282 `first_nonopt' and `last_nonopt' are relocated so that they describe
283 the new indices of the non-options in ARGV after they are moved. */
285 #if defined (__STDC__) && __STDC__
286 static void exchange (char **);
293 int bottom = first_nonopt;
294 int middle = last_nonopt;
298 /* Exchange the shorter segment with the far end of the longer segment.
299 That puts the shorter segment into the right place.
300 It leaves the longer segment in the right place overall,
301 but it consists of two parts that need to be swapped next. */
304 /* First make sure the handling of the `__getopt_nonoption_flags'
305 string can work normally. Our top argument must be in the range
307 if (nonoption_flags_len > 0 && top >= nonoption_flags_max_len)
309 /* We must extend the array. The user plays games with us and
310 presents new arguments. */
311 char *new_str = malloc (top + 1);
313 nonoption_flags_len = nonoption_flags_max_len = 0;
316 memcpy (new_str, __getopt_nonoption_flags, nonoption_flags_max_len);
317 memset (&new_str[nonoption_flags_max_len], '\0',
318 top + 1 - nonoption_flags_max_len);
319 nonoption_flags_max_len = top + 1;
320 __getopt_nonoption_flags = new_str;
325 while (top > middle && middle > bottom)
327 if (top - middle > middle - bottom)
329 /* Bottom segment is the short one. */
330 int len = middle - bottom;
333 /* Swap it with the top part of the top segment. */
334 for (i = 0; i < len; i++)
336 tem = argv[bottom + i];
337 argv[bottom + i] = argv[top - (middle - bottom) + i];
338 argv[top - (middle - bottom) + i] = tem;
339 SWAP_FLAGS (bottom + i, top - (middle - bottom) + i);
341 /* Exclude the moved bottom segment from further swapping. */
346 /* Top segment is the short one. */
347 int len = top - middle;
350 /* Swap it with the bottom part of the bottom segment. */
351 for (i = 0; i < len; i++)
353 tem = argv[bottom + i];
354 argv[bottom + i] = argv[middle + i];
355 argv[middle + i] = tem;
356 SWAP_FLAGS (bottom + i, middle + i);
358 /* Exclude the moved top segment from further swapping. */
363 /* Update records for the slots the non-options now occupy. */
365 first_nonopt += (GNoptind - last_nonopt);
366 last_nonopt = GNoptind;
369 /* Initialize the internal data when the first call is made. */
371 #if defined (__STDC__) && __STDC__
372 static const char *_getopt_initialize (int, char *const *, const char *);
375 _getopt_initialize (argc, argv, optstring)
378 const char *optstring;
380 /* Start processing options with ARGV-element 1 (since ARGV-element 0
381 is the program name); the sequence of previously skipped
382 non-option ARGV-elements is empty. */
384 first_nonopt = last_nonopt = GNoptind;
388 posixly_correct = getenv ("POSIXLY_CORRECT");
390 /* Determine how to handle the ordering of options and nonoptions. */
392 if (optstring[0] == '-')
394 ordering = RETURN_IN_ORDER;
397 else if (optstring[0] == '+')
399 ordering = REQUIRE_ORDER;
402 else if (posixly_correct != NULL)
403 ordering = REQUIRE_ORDER;
408 if (posixly_correct == NULL
409 && argc == original_argc && argv == original_argv)
411 if (nonoption_flags_max_len == 0)
413 if (__getopt_nonoption_flags == NULL
414 || __getopt_nonoption_flags[0] == '\0')
415 nonoption_flags_max_len = -1;
418 const char *orig_str = __getopt_nonoption_flags;
419 int len = nonoption_flags_max_len = strlen (orig_str);
420 if (nonoption_flags_max_len < argc)
421 nonoption_flags_max_len = argc;
422 __getopt_nonoption_flags =
423 (char *) malloc (nonoption_flags_max_len);
424 if (__getopt_nonoption_flags == NULL)
425 nonoption_flags_max_len = -1;
428 memcpy (__getopt_nonoption_flags, orig_str, len);
429 memset (&__getopt_nonoption_flags[len], '\0',
430 nonoption_flags_max_len - len);
434 nonoption_flags_len = nonoption_flags_max_len;
437 nonoption_flags_len = 0;
443 /* Scan elements of ARGV (whose length is ARGC) for option characters
446 If an element of ARGV starts with '-', and is not exactly "-" or "--",
447 then it is an option element. The characters of this element
448 (aside from the initial '-') are option characters. If `getopt'
449 is called repeatedly, it returns successively each of the option characters
450 from each of the option elements.
452 If `getopt' finds another option character, it returns that character,
453 updating `GNoptind' and `nextchar' so that the next call to `getopt' can
454 resume the scan with the following option character or ARGV-element.
456 If there are no more option characters, `getopt' returns -1.
457 Then `GNoptind' is the index in ARGV of the first ARGV-element
458 that is not an option. (The ARGV-elements have been permuted
459 so that those that are not options now come last.)
461 OPTSTRING is a string containing the legitimate option characters.
462 If an option character is seen that is not listed in OPTSTRING,
463 return '?' after printing an error message. If you set `GNopterr' to
464 zero, the error message is suppressed but we still return '?'.
466 If a char in OPTSTRING is followed by a colon, that means it wants an arg,
467 so the following text in the same ARGV-element, or the text of the following
468 ARGV-element, is returned in `GNoptarg'. Two colons mean an option that
469 wants an optional arg; if there is text in the current ARGV-element,
470 it is returned in `GNoptarg', otherwise `GNoptarg' is set to zero.
472 If OPTSTRING starts with `-' or `+', it requests different methods of
473 handling the non-option ARGV-elements.
474 See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above.
476 Long-named options begin with `--' instead of `-'.
477 Their names may be abbreviated as long as the abbreviation is unique
478 or is an exact match for some defined option. If they have an
479 argument, it follows the option name in the same ARGV-element, separated
480 from the option name by a `=', or else the in next ARGV-element.
481 When `getopt' finds a long-named option, it returns 0 if that option's
482 `flag' field is nonzero, the value of the option's `val' field
483 if the `flag' field is zero.
485 The elements of ARGV aren't really const, because we GNUNET_CRYPTO_random_permute them.
486 But we pretend they're const in the prototype to be compatible
489 LONGOPTS is a vector of `struct GNoption' terminated by an
490 element containing a name which is zero.
492 LONGIND returns the index in LONGOPT of the long-named option found.
493 It is only valid when a long-named option has been found by the most
496 If LONG_ONLY is nonzero, '-' as well as '--' can introduce
497 long-named options. */
500 GN_getopt_internal (int argc,
502 const char *optstring,
503 const struct GNoption *longopts,
507 static int __getopt_initialized = 0;
508 static int GNopterr = 1;
509 static int GNoptopt = '?';
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. */
605 nextchar = (argv[GNoptind] + 1
606 + (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. */
625 && (argv[GNoptind][1] == '-'
627 && (argv[GNoptind][2]
628 || !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"),
670 argv[0], argv[GNoptind]);
671 nextchar += strlen (nextchar);
679 option_index = indfound;
683 /* Don't test has_arg with >, because some C compilers don't
684 allow it to be used on enums. */
686 GNoptarg = nameend + 1;
691 if (argv[GNoptind - 1][1] == '-')
695 ("%s: option `--%s' does not allow an argument\n"),
696 argv[0], pfound->name);
698 /* +option or -option */
701 ("%s: option `%c%s' does not allow an argument\n"),
702 argv[0], argv[GNoptind - 1][0],
705 nextchar += strlen (nextchar);
707 GNoptopt = pfound->val;
711 else if (pfound->has_arg == 1)
715 GNoptarg = argv[GNoptind++];
722 _("%s: option `%s' requires an argument\n"),
723 argv[0], argv[GNoptind - 1]);
725 nextchar += strlen (nextchar);
726 GNoptopt = pfound->val;
727 return (optstring[0] == ':') ? ':' : '?';
730 nextchar += strlen (nextchar);
732 *longind = option_index;
735 *(pfound->flag) = pfound->val;
741 /* Can't find it as a long option. If this is not getopt_long_only,
742 or the option starts with '--' or is not a valid short
743 option, then it's an error.
744 Otherwise interpret it as a short option. */
745 if (!long_only || argv[GNoptind][1] == '-'
746 || my_index (optstring, *nextchar) == NULL)
750 if (argv[GNoptind][1] == '-')
752 fprintf (stderr, _("%s: unrecognized option `--%s'\n"),
755 /* +option or -option */
756 fprintf (stderr, _("%s: unrecognized option `%c%s'\n"),
757 argv[0], argv[GNoptind][0], nextchar);
759 nextchar = (char *) "";
766 /* Look at and handle the next short option-character. */
769 char c = *nextchar++;
770 char *temp = my_index (optstring, c);
772 /* Increment `GNoptind' when we start to process its last character. */
773 if (*nextchar == '\0')
776 if (temp == NULL || c == ':')
781 /* 1003.2 specifies the format of this message. */
782 fprintf (stderr, _("%s: illegal option -- %c\n"), argv[0], c);
784 fprintf (stderr, _("%s: invalid option -- %c\n"), argv[0], c);
789 /* Convenience. Treat POSIX -W foo same as long option --foo */
790 if (temp[0] == 'W' && temp[1] == ';')
793 const struct GNoption *p;
794 const struct GNoption *pfound = NULL;
800 /* This is an option that requires an argument. */
801 if (*nextchar != '\0')
804 /* If we end this ARGV-element by taking the rest as an arg,
805 we must advance to the next element now. */
808 else if (GNoptind == argc)
812 /* 1003.2 specifies the format of this message. */
813 fprintf (stderr, _("%s: option requires an argument -- %c\n"),
817 if (optstring[0] == ':')
824 /* We already incremented `GNoptind' once;
825 increment it again when taking next ARGV-elt as argument. */
826 GNoptarg = argv[GNoptind++];
828 /* GNoptarg is now the argument, see if it's in the
829 table of longopts. */
831 for (nextchar = nameend = GNoptarg; *nameend && *nameend != '=';
835 /* Test all long options for either exact match
836 or abbreviated matches. */
837 if (longopts != NULL)
838 for (p = longopts, option_index = 0; p->name; p++, option_index++)
839 if (!strncmp (p->name, nextchar, nameend - nextchar))
841 if ((unsigned int) (nameend - nextchar) == strlen (p->name))
843 /* Exact match found. */
845 indfound = option_index;
849 else if (pfound == NULL)
851 /* First nonexact match found. */
853 indfound = option_index;
856 /* Second or later nonexact match found. */
862 fprintf (stderr, _("%s: option `-W %s' is ambiguous\n"),
863 argv[0], argv[GNoptind]);
864 nextchar += strlen (nextchar);
870 option_index = indfound;
873 /* Don't test has_arg with >, because some C compilers don't
874 allow it to be used on enums. */
876 GNoptarg = nameend + 1;
880 fprintf (stderr, _("\
881 %s: option `-W %s' does not allow an argument\n"), argv[0], pfound->name);
883 nextchar += strlen (nextchar);
887 else if (pfound->has_arg == 1)
890 GNoptarg = argv[GNoptind++];
895 _("%s: option `%s' requires an argument\n"),
896 argv[0], argv[GNoptind - 1]);
897 nextchar += strlen (nextchar);
898 return optstring[0] == ':' ? ':' : '?';
901 nextchar += strlen (nextchar);
903 *longind = option_index;
906 *(pfound->flag) = pfound->val;
912 return 'W'; /* Let the application handle it. */
918 /* This is an option that accepts an argument optionally. */
919 if (*nextchar != '\0')
930 /* This is an option that requires an argument. */
931 if (*nextchar != '\0')
934 /* If we end this ARGV-element by taking the rest as an arg,
935 we must advance to the next element now. */
938 else if (GNoptind == argc)
942 /* 1003.2 specifies the format of this message. */
944 _("%s: option requires an argument -- %c\n"),
948 if (optstring[0] == ':')
954 /* We already incremented `GNoptind' once;
955 increment it again when taking next ARGV-elt as argument. */
956 GNoptarg = argv[GNoptind++];
965 GNgetopt_long (int argc,
968 const struct GNoption *long_options, int *opt_index)
970 return GN_getopt_internal (argc, argv, options, long_options, opt_index, 0);
973 /* ******************** now the GNUnet specific modifications... ********************* */
976 * Parse the command line.
978 * @param binaryOptions Name of application with option summary
979 * @param allOptions defined options and handlers
980 * @param argc number of arguments
981 * @param argv actual arguments
982 * @return index into argv with first non-option
983 * argument, or -1 on error
986 GNUNET_GETOPT_run (const char *binaryOptions,
987 const struct GNUNET_GETOPT_CommandLineOption *allOptions,
988 unsigned int argc, char *const *argv)
990 struct GNoption *long_options;
991 struct GNUNET_GETOPT_CommandLineProcessorContext clpc;
999 GNUNET_assert (argc > 0);
1001 clpc.binaryName = argv[0];
1002 clpc.binaryOptions = binaryOptions;
1003 clpc.allOptions = allOptions;
1007 while (allOptions[count].name != NULL)
1009 long_options = GNUNET_malloc (sizeof (struct GNoption) * (count + 1));
1010 shorts = GNUNET_malloc (count * 2 + 1);
1012 for (i = 0; i < count; i++)
1014 long_options[i].name = allOptions[i].name;
1015 long_options[i].has_arg = allOptions[i].require_argument;
1016 long_options[i].flag = NULL;
1017 long_options[i].val = allOptions[i].shortName;
1018 shorts[spos++] = allOptions[i].shortName;
1019 if (allOptions[i].require_argument != 0)
1020 shorts[spos++] = ':';
1022 long_options[count].name = NULL;
1023 long_options[count].has_arg = 0;
1024 long_options[count].flag = NULL;
1025 long_options[count].val = '\0';
1026 shorts[spos] = '\0';
1028 /* main getopt loop */
1029 while (cont == GNUNET_OK)
1031 int option_index = 0;
1032 c = GNgetopt_long (argc, argv, shorts, long_options, &option_index);
1034 if (c == GNUNET_SYSERR)
1035 break; /* No more flags to process */
1037 for (i = 0; i < count; i++)
1039 clpc.currentArgument = GNoptind - 1;
1040 if ((char) c == allOptions[i].shortName)
1042 cont = allOptions[i].processor (&clpc,
1044 allOptions[i].name, GNoptarg);
1050 fprintf (stderr, _("Use --help to get a list of options.\n"));
1051 cont = GNUNET_SYSERR;
1055 GNUNET_free (shorts);
1056 GNUNET_free (long_options);
1057 if (cont == GNUNET_SYSERR)
1058 return GNUNET_SYSERR;
1062 /* end of getopt.c */