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 /* Formerly, initialization of getopt depended on GNoptind==0, which
139 causes problems with re-calling getopt as programs generally don't
142 static int __getopt_initialized = 0;
144 /* The next char to be scanned in the option-element
145 in which the last option character we returned was found.
146 This allows us to pick up the scan where we left off.
148 If this is zero, or a null string, it means resume the scan
149 by advancing to the next ARGV-element. */
151 static char *nextchar;
153 /* Callers store zero here to inhibit the error message
154 for unrecognized options. */
156 static int GNopterr = 1;
158 /* Set to an option character which was unrecognized.
159 This must be initialized on some systems to avoid linking in the
160 system's own getopt implementation. */
162 static int GNoptopt = '?';
164 /* Describe how to deal with options that follow non-option ARGV-elements.
166 If the caller did not specify anything,
167 the default is REQUIRE_ORDER if the environment variable
168 POSIXLY_CORRECT is defined, PERMUTE otherwise.
170 REQUIRE_ORDER means don't recognize them as options;
171 stop option processing when the first non-option is seen.
172 This is what Unix does.
173 This mode of operation is selected by either setting the environment
174 variable POSIXLY_CORRECT, or using `+' as the first character
175 of the list of option characters.
177 PERMUTE is the default. We GNUNET_CRYPTO_random_permute the contents of ARGV as we scan,
178 so that eventually all the non-options are at the end. This allows options
179 to be given in any order, even with programs that were not written to
182 RETURN_IN_ORDER is an option available to programs that were written
183 to expect GNoptions and other ARGV-elements in any order and that care about
184 the ordering of the two. We describe each non-option ARGV-element
185 as if it were the argument of an option with character code 1.
186 Using `-' as the first character of the list of option characters
187 selects this mode of operation.
189 The special argument `--' forces an end of option-scanning regardless
190 of the value of `ordering'. In the case of RETURN_IN_ORDER, only
191 `--' can cause `getopt' to return -1 with `GNoptind' != ARGC. */
195 REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER
198 /* Value of POSIXLY_CORRECT environment variable. */
199 static char *posixly_correct;
201 #ifdef __GNU_LIBRARY__
202 /* We want to avoid inclusion of string.h with non-GNU libraries
203 because there are many ways it can cause trouble.
204 On some systems, it contains special magic macros that don't work
207 #define my_index strchr
210 /* Avoid depending on library functions or files
211 whose names are inconsistent. */
229 /* If using GCC, we can safely declare strlen this way.
230 If not using GCC, it is ok not to declare it. */
232 /* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h.
233 That was relevant to code that was here before. */
234 #if !defined (__STDC__) || !__STDC__
235 /* gcc with -traditional declares the built-in strlen to return int,
236 and has done so at least since version 2.4.5. -- rms. */
237 extern int strlen (const char *);
238 #endif /* not __STDC__ */
239 #endif /* __GNUC__ */
241 #endif /* not __GNU_LIBRARY__ */
243 /* Handle permutation of arguments. */
245 /* Describe the part of ARGV that contains non-options that have
246 been skipped. `first_nonopt' is the index in ARGV of the first of them;
247 `last_nonopt' is the index after the last of them. */
249 static int first_nonopt;
250 static int last_nonopt;
253 /* Bash 2.0 gives us an environment variable containing flags
254 indicating ARGV elements that should not be considered arguments. */
256 /* Defined in getopt_init.c */
257 extern char *__getopt_nonoption_flags;
259 static int nonoption_flags_max_len;
260 static int nonoption_flags_len;
262 static int original_argc;
263 static char *const *original_argv;
265 extern pid_t __libc_pid;
267 /* Make sure the environment variable bash 2.0 puts in the environment
268 is valid for the getopt call we must make sure that the ARGV passed
269 to getopt is that one passed to the process. */
271 __attribute__ ((unused)) store_args_and_env (int argc, char *const *argv)
273 /* XXX This is no good solution. We should rather copy the args so
274 that we can compare them later. But we must not use malloc(3). */
275 original_argc = argc;
276 original_argv = argv;
279 text_set_element (__libc_subinit, store_args_and_env);
281 # define SWAP_FLAGS(ch1, ch2) \
282 if (nonoption_flags_len > 0) \
284 char __tmp = __getopt_nonoption_flags[ch1]; \
285 __getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2]; \
286 __getopt_nonoption_flags[ch2] = __tmp; \
289 # define SWAP_FLAGS(ch1, ch2)
292 /* Exchange two adjacent subsequences of ARGV.
293 One subsequence is elements [first_nonopt,last_nonopt)
294 which contains all the non-options that have been skipped so far.
295 The other is elements [last_nonopt,GNoptind), which contains all
296 the options processed since those non-options were skipped.
298 `first_nonopt' and `last_nonopt' are relocated so that they describe
299 the new indices of the non-options in ARGV after they are moved. */
301 #if defined (__STDC__) && __STDC__
302 static void exchange (char **);
309 int bottom = first_nonopt;
310 int middle = last_nonopt;
314 /* Exchange the shorter segment with the far end of the longer segment.
315 That puts the shorter segment into the right place.
316 It leaves the longer segment in the right place overall,
317 but it consists of two parts that need to be swapped next. */
320 /* First make sure the handling of the `__getopt_nonoption_flags'
321 string can work normally. Our top argument must be in the range
323 if (nonoption_flags_len > 0 && top >= nonoption_flags_max_len)
325 /* We must extend the array. The user plays games with us and
326 presents new arguments. */
327 char *new_str = malloc (top + 1);
329 nonoption_flags_len = nonoption_flags_max_len = 0;
332 memcpy (new_str, __getopt_nonoption_flags, nonoption_flags_max_len);
333 memset (&new_str[nonoption_flags_max_len], '\0',
334 top + 1 - nonoption_flags_max_len);
335 nonoption_flags_max_len = top + 1;
336 __getopt_nonoption_flags = new_str;
341 while (top > middle && middle > bottom)
343 if (top - middle > middle - bottom)
345 /* Bottom segment is the short one. */
346 int len = middle - bottom;
349 /* Swap it with the top part of the top segment. */
350 for (i = 0; i < len; i++)
352 tem = argv[bottom + i];
353 argv[bottom + i] = argv[top - (middle - bottom) + i];
354 argv[top - (middle - bottom) + i] = tem;
355 SWAP_FLAGS (bottom + i, top - (middle - bottom) + i);
357 /* Exclude the moved bottom segment from further swapping. */
362 /* Top segment is the short one. */
363 int len = top - middle;
366 /* Swap it with the bottom part of the bottom segment. */
367 for (i = 0; i < len; i++)
369 tem = argv[bottom + i];
370 argv[bottom + i] = argv[middle + i];
371 argv[middle + i] = tem;
372 SWAP_FLAGS (bottom + i, middle + i);
374 /* Exclude the moved top segment from further swapping. */
379 /* Update records for the slots the non-options now occupy. */
381 first_nonopt += (GNoptind - last_nonopt);
382 last_nonopt = GNoptind;
385 /* Initialize the internal data when the first call is made. */
387 #if defined (__STDC__) && __STDC__
388 static const char *_getopt_initialize (int, char *const *, const char *);
391 _getopt_initialize (argc, argv, optstring)
394 const char *optstring;
396 /* Start processing options with ARGV-element 1 (since ARGV-element 0
397 is the program name); the sequence of previously skipped
398 non-option ARGV-elements is empty. */
400 first_nonopt = last_nonopt = GNoptind;
404 posixly_correct = getenv ("POSIXLY_CORRECT");
406 /* Determine how to handle the ordering of options and nonoptions. */
408 if (optstring[0] == '-')
410 ordering = RETURN_IN_ORDER;
413 else if (optstring[0] == '+')
415 ordering = REQUIRE_ORDER;
418 else if (posixly_correct != NULL)
419 ordering = REQUIRE_ORDER;
424 if (posixly_correct == NULL
425 && argc == original_argc && argv == original_argv)
427 if (nonoption_flags_max_len == 0)
429 if (__getopt_nonoption_flags == NULL
430 || __getopt_nonoption_flags[0] == '\0')
431 nonoption_flags_max_len = -1;
434 const char *orig_str = __getopt_nonoption_flags;
435 int len = nonoption_flags_max_len = strlen (orig_str);
436 if (nonoption_flags_max_len < argc)
437 nonoption_flags_max_len = argc;
438 __getopt_nonoption_flags =
439 (char *) malloc (nonoption_flags_max_len);
440 if (__getopt_nonoption_flags == NULL)
441 nonoption_flags_max_len = -1;
444 memcpy (__getopt_nonoption_flags, orig_str, len);
445 memset (&__getopt_nonoption_flags[len], '\0',
446 nonoption_flags_max_len - len);
450 nonoption_flags_len = nonoption_flags_max_len;
453 nonoption_flags_len = 0;
459 /* Scan elements of ARGV (whose length is ARGC) for option characters
462 If an element of ARGV starts with '-', and is not exactly "-" or "--",
463 then it is an option element. The characters of this element
464 (aside from the initial '-') are option characters. If `getopt'
465 is called repeatedly, it returns successively each of the option characters
466 from each of the option elements.
468 If `getopt' finds another option character, it returns that character,
469 updating `GNoptind' and `nextchar' so that the next call to `getopt' can
470 resume the scan with the following option character or ARGV-element.
472 If there are no more option characters, `getopt' returns -1.
473 Then `GNoptind' is the index in ARGV of the first ARGV-element
474 that is not an option. (The ARGV-elements have been permuted
475 so that those that are not options now come last.)
477 OPTSTRING is a string containing the legitimate option characters.
478 If an option character is seen that is not listed in OPTSTRING,
479 return '?' after printing an error message. If you set `GNopterr' to
480 zero, the error message is suppressed but we still return '?'.
482 If a char in OPTSTRING is followed by a colon, that means it wants an arg,
483 so the following text in the same ARGV-element, or the text of the following
484 ARGV-element, is returned in `GNoptarg'. Two colons mean an option that
485 wants an optional arg; if there is text in the current ARGV-element,
486 it is returned in `GNoptarg', otherwise `GNoptarg' is set to zero.
488 If OPTSTRING starts with `-' or `+', it requests different methods of
489 handling the non-option ARGV-elements.
490 See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above.
492 Long-named options begin with `--' instead of `-'.
493 Their names may be abbreviated as long as the abbreviation is unique
494 or is an exact match for some defined option. If they have an
495 argument, it follows the option name in the same ARGV-element, separated
496 from the option name by a `=', or else the in next ARGV-element.
497 When `getopt' finds a long-named option, it returns 0 if that option's
498 `flag' field is nonzero, the value of the option's `val' field
499 if the `flag' field is zero.
501 The elements of ARGV aren't really const, because we GNUNET_CRYPTO_random_permute them.
502 But we pretend they're const in the prototype to be compatible
505 LONGOPTS is a vector of `struct GNoption' terminated by an
506 element containing a name which is zero.
508 LONGIND returns the index in LONGOPT of the long-named option found.
509 It is only valid when a long-named option has been found by the most
512 If LONG_ONLY is nonzero, '-' as well as '--' can introduce
513 long-named options. */
516 GN_getopt_internal (argc, argv, optstring, longopts, longind, long_only)
519 const char *optstring;
520 const struct GNoption *longopts;
526 if (GNoptind == 0 || !__getopt_initialized)
529 GNoptind = 1; /* Don't scan ARGV[0], the program name. */
530 optstring = _getopt_initialize (argc, argv, optstring);
531 __getopt_initialized = 1;
534 /* Test whether ARGV[GNoptind] points to a non-option argument.
535 Either it does not have option syntax, or there is an environment flag
536 from the shell indicating it is not an option. The later information
537 is only used when the used in the GNU libc. */
539 #define NONOPTION_P (argv[GNoptind][0] != '-' || argv[GNoptind][1] == '\0' \
540 || (GNoptind < nonoption_flags_len \
541 && __getopt_nonoption_flags[GNoptind] == '1'))
543 #define NONOPTION_P (argv[GNoptind][0] != '-' || argv[GNoptind][1] == '\0')
546 if (nextchar == NULL || *nextchar == '\0')
548 /* Advance to the next ARGV-element. */
550 /* Give FIRST_NONOPT & LAST_NONOPT rational values if GNoptind has been
551 moved back by the user (who may also have changed the arguments). */
552 if (last_nonopt > GNoptind)
553 last_nonopt = GNoptind;
554 if (first_nonopt > GNoptind)
555 first_nonopt = GNoptind;
557 if (ordering == PERMUTE)
559 /* If we have just processed some options following some non-options,
560 exchange them so that the options come first. */
562 if (first_nonopt != last_nonopt && last_nonopt != GNoptind)
563 exchange ((char **) argv);
564 else if (last_nonopt != GNoptind)
565 first_nonopt = GNoptind;
567 /* Skip any additional non-options
568 and extend the range of non-options previously skipped. */
570 while (GNoptind < argc && NONOPTION_P)
572 last_nonopt = GNoptind;
575 /* The special ARGV-element `--' means premature end of options.
576 Skip it like a null option,
577 then exchange with previous non-options as if it were an option,
578 then skip everything else like a non-option. */
579 if (GNoptind != argc && !strcmp (argv[GNoptind], "--"))
583 if (first_nonopt != last_nonopt && last_nonopt != GNoptind)
584 exchange ((char **) argv);
585 else if (first_nonopt == last_nonopt)
586 first_nonopt = GNoptind;
592 /* If we have done all the ARGV-elements, stop the scan
593 and back over any non-options that we skipped and permuted. */
595 if (GNoptind == argc)
597 /* Set the next-arg-index to point at the non-options
598 that we previously skipped, so the caller will digest them. */
599 if (first_nonopt != last_nonopt)
600 GNoptind = first_nonopt;
604 /* If we have come to a non-option and did not permute it,
605 either stop the scan or describe it to the caller and pass it by. */
609 if (ordering == REQUIRE_ORDER)
611 GNoptarg = argv[GNoptind++];
615 /* We have found another option-ARGV-element.
616 Skip the initial punctuation. */
618 nextchar = (argv[GNoptind] + 1
619 + (longopts != NULL && argv[GNoptind][1] == '-'));
622 /* Decode the current option-ARGV-element. */
624 /* Check whether the ARGV-element is a long option.
626 If long_only and the ARGV-element has the form "-f", where f is
627 a valid short option, don't consider it an abbreviated form of
628 a long option that starts with f. Otherwise there would be no
629 way to give the -f short option.
631 On the other hand, if there's a long option "fubar" and
632 the ARGV-element is "-fu", do consider that an abbreviation of
633 the long option, just like "--fu", and not "-f" with arg "u".
635 This distinction seems to be the most useful approach. */
638 && (argv[GNoptind][1] == '-'
640 && (argv[GNoptind][2]
641 || !my_index (optstring, argv[GNoptind][1])))))
644 const struct GNoption *p;
645 const struct GNoption *pfound = NULL;
651 for (nameend = nextchar; *nameend && *nameend != '='; nameend++)
654 /* Test all long options for either exact match
655 or abbreviated matches. */
656 for (p = longopts, option_index = 0; p->name; p++, option_index++)
657 if (!strncmp (p->name, nextchar, nameend - nextchar))
659 if ((unsigned int) (nameend - nextchar)
660 == (unsigned int) strlen (p->name))
662 /* Exact match found. */
664 indfound = option_index;
668 else if (pfound == NULL)
670 /* First nonexact match found. */
672 indfound = option_index;
675 /* Second or later nonexact match found. */
682 fprintf (stderr, _("%s: option `%s' is ambiguous\n"),
683 argv[0], argv[GNoptind]);
684 nextchar += strlen (nextchar);
692 option_index = indfound;
696 /* Don't test has_arg with >, because some C compilers don't
697 allow it to be used on enums. */
699 GNoptarg = nameend + 1;
704 if (argv[GNoptind - 1][1] == '-')
708 ("%s: option `--%s' does not allow an argument\n"),
709 argv[0], pfound->name);
711 /* +option or -option */
714 ("%s: option `%c%s' does not allow an argument\n"),
715 argv[0], argv[GNoptind - 1][0],
718 nextchar += strlen (nextchar);
720 GNoptopt = pfound->val;
724 else if (pfound->has_arg == 1)
728 GNoptarg = argv[GNoptind++];
735 _("%s: option `%s' requires an argument\n"),
736 argv[0], argv[GNoptind - 1]);
738 nextchar += strlen (nextchar);
739 GNoptopt = pfound->val;
740 return (optstring[0] == ':') ? ':' : '?';
743 nextchar += strlen (nextchar);
745 *longind = option_index;
748 *(pfound->flag) = pfound->val;
754 /* Can't find it as a long option. If this is not getopt_long_only,
755 or the option starts with '--' or is not a valid short
756 option, then it's an error.
757 Otherwise interpret it as a short option. */
758 if (!long_only || argv[GNoptind][1] == '-'
759 || my_index (optstring, *nextchar) == NULL)
763 if (argv[GNoptind][1] == '-')
765 fprintf (stderr, _("%s: unrecognized option `--%s'\n"),
768 /* +option or -option */
769 fprintf (stderr, _("%s: unrecognized option `%c%s'\n"),
770 argv[0], argv[GNoptind][0], nextchar);
772 nextchar = (char *) "";
779 /* Look at and handle the next short option-character. */
782 char c = *nextchar++;
783 char *temp = my_index (optstring, c);
785 /* Increment `GNoptind' when we start to process its last character. */
786 if (*nextchar == '\0')
789 if (temp == NULL || c == ':')
794 /* 1003.2 specifies the format of this message. */
795 fprintf (stderr, _("%s: illegal option -- %c\n"), argv[0], c);
797 fprintf (stderr, _("%s: invalid option -- %c\n"), argv[0], c);
802 /* Convenience. Treat POSIX -W foo same as long option --foo */
803 if (temp[0] == 'W' && temp[1] == ';')
806 const struct GNoption *p;
807 const struct GNoption *pfound = NULL;
813 /* This is an option that requires an argument. */
814 if (*nextchar != '\0')
817 /* If we end this ARGV-element by taking the rest as an arg,
818 we must advance to the next element now. */
821 else if (GNoptind == argc)
825 /* 1003.2 specifies the format of this message. */
826 fprintf (stderr, _("%s: option requires an argument -- %c\n"),
830 if (optstring[0] == ':')
837 /* We already incremented `GNoptind' once;
838 increment it again when taking next ARGV-elt as argument. */
839 GNoptarg = argv[GNoptind++];
841 /* GNoptarg is now the argument, see if it's in the
842 table of longopts. */
844 for (nextchar = nameend = GNoptarg; *nameend && *nameend != '=';
848 /* Test all long options for either exact match
849 or abbreviated matches. */
850 for (p = longopts, option_index = 0; p->name; p++, option_index++)
851 if (!strncmp (p->name, nextchar, nameend - nextchar))
853 if ((unsigned int) (nameend - nextchar) == strlen (p->name))
855 /* Exact match found. */
857 indfound = option_index;
861 else if (pfound == NULL)
863 /* First nonexact match found. */
865 indfound = option_index;
868 /* Second or later nonexact match found. */
874 fprintf (stderr, _("%s: option `-W %s' is ambiguous\n"),
875 argv[0], argv[GNoptind]);
876 nextchar += strlen (nextchar);
882 option_index = indfound;
885 /* Don't test has_arg with >, because some C compilers don't
886 allow it to be used on enums. */
888 GNoptarg = nameend + 1;
892 fprintf (stderr, _("\
893 %s: option `-W %s' does not allow an argument\n"), argv[0], pfound->name);
895 nextchar += strlen (nextchar);
899 else if (pfound->has_arg == 1)
902 GNoptarg = argv[GNoptind++];
907 _("%s: option `%s' requires an argument\n"),
908 argv[0], argv[GNoptind - 1]);
909 nextchar += strlen (nextchar);
910 return optstring[0] == ':' ? ':' : '?';
913 nextchar += strlen (nextchar);
915 *longind = option_index;
918 *(pfound->flag) = pfound->val;
924 return 'W'; /* Let the application handle it. */
930 /* This is an option that accepts an argument optionally. */
931 if (*nextchar != '\0')
942 /* This is an option that requires an argument. */
943 if (*nextchar != '\0')
946 /* If we end this ARGV-element by taking the rest as an arg,
947 we must advance to the next element now. */
950 else if (GNoptind == argc)
954 /* 1003.2 specifies the format of this message. */
956 _("%s: option requires an argument -- %c\n"),
960 if (optstring[0] == ':')
966 /* We already incremented `GNoptind' once;
967 increment it again when taking next ARGV-elt as argument. */
968 GNoptarg = argv[GNoptind++];
977 GNgetopt_long (int argc,
980 const struct GNoption *long_options, int *opt_index)
982 return GN_getopt_internal (argc, argv, options, long_options, opt_index, 0);
985 /* ******************** now the GNUnet specific modifications... ********************* */
988 * Parse the command line.
990 * @param binaryOptions Name of application with option summary
991 * @param allOptions defined options and handlers
992 * @param argc number of arguments
993 * @param argv actual arguments
994 * @return index into argv with first non-option
995 * argument, or -1 on error
998 GNUNET_GETOPT_run (const char *binaryOptions,
999 const struct GNUNET_GETOPT_CommandLineOption *allOptions,
1000 unsigned int argc, char *const *argv)
1002 struct GNoption *long_options;
1003 struct GNUNET_GETOPT_CommandLineProcessorContext clpc;
1011 GNUNET_assert (argc > 0);
1013 clpc.binaryName = argv[0];
1014 clpc.binaryOptions = binaryOptions;
1015 clpc.allOptions = allOptions;
1019 while (allOptions[count].name != NULL)
1021 long_options = GNUNET_malloc (sizeof (struct GNoption) * (count + 1));
1022 shorts = GNUNET_malloc (count * 2 + 1);
1024 for (i = 0; i < count; i++)
1026 long_options[i].name = allOptions[i].name;
1027 long_options[i].has_arg = allOptions[i].require_argument;
1028 long_options[i].flag = NULL;
1029 long_options[i].val = allOptions[i].shortName;
1030 shorts[spos++] = allOptions[i].shortName;
1031 if (allOptions[i].require_argument != 0)
1032 shorts[spos++] = ':';
1034 long_options[count].name = NULL;
1035 long_options[count].has_arg = 0;
1036 long_options[count].flag = NULL;
1037 long_options[count].val = '\0';
1038 shorts[spos++] = '\0';
1040 /* main getopt loop */
1041 while (cont == GNUNET_OK)
1043 int option_index = 0;
1044 c = GNgetopt_long (argc, argv, shorts, long_options, &option_index);
1046 if (c == GNUNET_SYSERR)
1047 break; /* No more flags to process */
1049 for (i = 0; i < count; i++)
1051 clpc.currentArgument = GNoptind - 1;
1052 if ((char) c == allOptions[i].shortName)
1054 cont = allOptions[i].processor (&clpc,
1056 allOptions[i].name, GNoptarg);
1062 fprintf (stderr, _("Use --help to get a list of options.\n"));
1063 cont = GNUNET_SYSERR;
1067 GNUNET_free (shorts);
1068 GNUNET_free (long_options);
1069 if (cont == GNUNET_SYSERR)
1070 return GNUNET_SYSERR;
1074 /* end of getopt.c */