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. */
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. */
225 extern int strlen (const char *);
226 #endif /* not __STDC__ */
227 #endif /* __GNUC__ */
229 #endif /* not __GNU_LIBRARY__ */
231 /* Handle permutation of arguments. */
233 /* Describe the part of ARGV that contains non-options that have
234 been skipped. `first_nonopt' is the index in ARGV of the first of them;
235 `last_nonopt' is the index after the last of them. */
237 static int first_nonopt;
238 static int last_nonopt;
241 /* Bash 2.0 gives us an environment variable containing flags
242 indicating ARGV elements that should not be considered arguments. */
244 /* Defined in getopt_init.c */
245 extern char *__getopt_nonoption_flags;
247 static int nonoption_flags_max_len;
248 static int nonoption_flags_len;
250 static int original_argc;
251 static char *const *original_argv;
253 extern pid_t __libc_pid;
255 /* Make sure the environment variable bash 2.0 puts in the environment
256 is valid for the getopt call we must make sure that the ARGV passed
257 to getopt is that one passed to the process. */
259 __attribute__ ((unused)) store_args_and_env (int argc, char *const *argv)
261 /* XXX This is no good solution. We should rather copy the args so
262 * that we can compare them later. But we must not use malloc(3). */
263 original_argc = argc;
264 original_argv = argv;
267 text_set_element (__libc_subinit, store_args_and_env);
269 #define SWAP_FLAGS(ch1, ch2) \
270 if (nonoption_flags_len > 0) \
272 char __tmp = __getopt_nonoption_flags[ch1]; \
273 __getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2]; \
274 __getopt_nonoption_flags[ch2] = __tmp; \
277 #define SWAP_FLAGS(ch1, ch2)
280 /* Exchange two adjacent subsequences of ARGV.
281 One subsequence is elements [first_nonopt,last_nonopt)
282 which contains all the non-options that have been skipped so far.
283 The other is elements [last_nonopt,GNoptind), which contains all
284 the options processed since those non-options were skipped.
286 `first_nonopt' and `last_nonopt' are relocated so that they describe
287 the new indices of the non-options in ARGV after they are moved. */
289 #if defined (__STDC__) && __STDC__
290 static void exchange (char **);
297 int bottom = first_nonopt;
298 int middle = last_nonopt;
302 /* Exchange the shorter segment with the far end of the longer segment.
303 * That puts the shorter segment into the right place.
304 * It leaves the longer segment in the right place overall,
305 * but it consists of two parts that need to be swapped next. */
308 /* First make sure the handling of the `__getopt_nonoption_flags'
309 * string can work normally. Our top argument must be in the range
311 if (nonoption_flags_len > 0 && top >= nonoption_flags_max_len)
313 /* We must extend the array. The user plays games with us and
314 * presents new arguments. */
315 char *new_str = malloc (top + 1);
318 nonoption_flags_len = nonoption_flags_max_len = 0;
321 memcpy (new_str, __getopt_nonoption_flags, nonoption_flags_max_len);
322 memset (&new_str[nonoption_flags_max_len], '\0',
323 top + 1 - nonoption_flags_max_len);
324 nonoption_flags_max_len = top + 1;
325 __getopt_nonoption_flags = new_str;
330 while (top > middle && middle > bottom)
332 if (top - middle > middle - bottom)
334 /* Bottom segment is the short one. */
335 int len = middle - bottom;
338 /* Swap it with the top part of the top segment. */
339 for (i = 0; i < len; i++)
341 tem = argv[bottom + i];
342 argv[bottom + i] = argv[top - (middle - bottom) + i];
343 argv[top - (middle - bottom) + i] = tem;
344 SWAP_FLAGS (bottom + i, top - (middle - bottom) + i);
346 /* Exclude the moved bottom segment from further swapping. */
351 /* Top segment is the short one. */
352 int len = top - middle;
355 /* Swap it with the bottom part of the bottom segment. */
356 for (i = 0; i < len; i++)
358 tem = argv[bottom + i];
359 argv[bottom + i] = argv[middle + i];
360 argv[middle + i] = tem;
361 SWAP_FLAGS (bottom + i, middle + i);
363 /* Exclude the moved top segment from further swapping. */
368 /* Update records for the slots the non-options now occupy. */
370 first_nonopt += (GNoptind - last_nonopt);
371 last_nonopt = GNoptind;
374 /* Initialize the internal data when the first call is made. */
376 #if defined (__STDC__) && __STDC__
377 static const char *_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
414 && 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 =
429 (char *) malloc (nonoption_flags_max_len);
430 if (__getopt_nonoption_flags == NULL)
431 nonoption_flags_max_len = -1;
434 memcpy (__getopt_nonoption_flags, orig_str, len);
435 memset (&__getopt_nonoption_flags[len], '\0',
436 nonoption_flags_max_len - len);
440 nonoption_flags_len = nonoption_flags_max_len;
443 nonoption_flags_len = 0;
449 /* Scan elements of ARGV (whose length is ARGC) for option characters
452 If an element of ARGV starts with '-', and is not exactly "-" or "--",
453 then it is an option element. The characters of this element
454 (aside from the initial '-') are option characters. If `getopt'
455 is called repeatedly, it returns successively each of the option characters
456 from each of the option elements.
458 If `getopt' finds another option character, it returns that character,
459 updating `GNoptind' and `nextchar' so that the next call to `getopt' can
460 resume the scan with the following option character or ARGV-element.
462 If there are no more option characters, `getopt' returns -1.
463 Then `GNoptind' is the index in ARGV of the first ARGV-element
464 that is not an option. (The ARGV-elements have been permuted
465 so that those that are not options now come last.)
467 OPTSTRING is a string containing the legitimate option characters.
468 If an option character is seen that is not listed in OPTSTRING,
469 return '?' after printing an error message. If you set `GNopterr' to
470 zero, the error message is suppressed but we still return '?'.
472 If a char in OPTSTRING is followed by a colon, that means it wants an arg,
473 so the following text in the same ARGV-element, or the text of the following
474 ARGV-element, is returned in `GNoptarg'. Two colons mean an option that
475 wants an optional arg; if there is text in the current ARGV-element,
476 it is returned in `GNoptarg', otherwise `GNoptarg' is set to zero.
478 If OPTSTRING starts with `-' or `+', it requests different methods of
479 handling the non-option ARGV-elements.
480 See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above.
482 Long-named options begin with `--' instead of `-'.
483 Their names may be abbreviated as long as the abbreviation is unique
484 or is an exact match for some defined option. If they have an
485 argument, it follows the option name in the same ARGV-element, separated
486 from the option name by a `=', or else the in next ARGV-element.
487 When `getopt' finds a long-named option, it returns 0 if that option's
488 `flag' field is nonzero, the value of the option's `val' field
489 if the `flag' field is zero.
491 The elements of ARGV aren't really const, because we GNUNET_CRYPTO_random_permute them.
492 But we pretend they're const in the prototype to be compatible
495 LONGOPTS is a vector of `struct GNoption' terminated by an
496 element containing a name which is zero.
498 LONGIND returns the index in LONGOPT of the long-named option found.
499 It is only valid when a long-named option has been found by the most
502 If LONG_ONLY is nonzero, '-' as well as '--' can introduce
503 long-named options. */
506 GN_getopt_internal (int argc, char *const *argv, const char *optstring,
507 const struct GNoption *longopts, int *longind,
510 static int __getopt_initialized = 0;
511 static int GNopterr = 1;
515 if (GNoptind == 0 || !__getopt_initialized)
518 GNoptind = 1; /* Don't scan ARGV[0], the program name. */
519 optstring = _getopt_initialize (argc, argv, optstring);
520 __getopt_initialized = 1;
523 /* Test whether ARGV[GNoptind] points to a non-option argument.
524 * Either it does not have option syntax, or there is an environment flag
525 * from the shell indicating it is not an option. The later information
526 * is only used when the used in the GNU libc. */
528 #define NONOPTION_P (argv[GNoptind][0] != '-' || argv[GNoptind][1] == '\0' \
529 || (GNoptind < nonoption_flags_len \
530 && __getopt_nonoption_flags[GNoptind] == '1'))
532 #define NONOPTION_P (argv[GNoptind][0] != '-' || argv[GNoptind][1] == '\0')
535 if (nextchar == NULL || *nextchar == '\0')
537 /* Advance to the next ARGV-element. */
539 /* Give FIRST_NONOPT & LAST_NONOPT rational values if GNoptind has been
540 * moved back by the user (who may also have changed the arguments). */
541 if (last_nonopt > GNoptind)
542 last_nonopt = GNoptind;
543 if (first_nonopt > GNoptind)
544 first_nonopt = GNoptind;
546 if (ordering == PERMUTE)
548 /* If we have just processed some options following some non-options,
549 * exchange them so that the options come first. */
551 if (first_nonopt != last_nonopt && last_nonopt != GNoptind)
552 exchange ((char **) argv);
553 else if (last_nonopt != GNoptind)
554 first_nonopt = GNoptind;
556 /* Skip any additional non-options
557 * and extend the range of non-options previously skipped. */
559 while (GNoptind < argc && NONOPTION_P)
561 last_nonopt = GNoptind;
564 /* The special ARGV-element `--' means premature end of options.
565 * Skip it like a null option,
566 * then exchange with previous non-options as if it were an option,
567 * then skip everything else like a non-option. */
568 if (GNoptind != argc && !strcmp (argv[GNoptind], "--"))
572 if (first_nonopt != last_nonopt && last_nonopt != GNoptind)
573 exchange ((char **) argv);
574 else if (first_nonopt == last_nonopt)
575 first_nonopt = GNoptind;
581 /* If we have done all the ARGV-elements, stop the scan
582 * and back over any non-options that we skipped and permuted. */
584 if (GNoptind == argc)
586 /* Set the next-arg-index to point at the non-options
587 * that we previously skipped, so the caller will digest them. */
588 if (first_nonopt != last_nonopt)
589 GNoptind = first_nonopt;
593 /* If we have come to a non-option and did not permute it,
594 * either stop the scan or describe it to the caller and pass it by. */
598 if (ordering == REQUIRE_ORDER)
600 GNoptarg = argv[GNoptind++];
604 /* We have found another option-ARGV-element.
605 * Skip the initial punctuation. */
608 (argv[GNoptind] + 1 + (longopts != NULL && argv[GNoptind][1] == '-'));
611 /* Decode the current option-ARGV-element. */
613 /* Check whether the ARGV-element is a long option.
615 * If long_only and the ARGV-element has the form "-f", where f is
616 * a valid short option, don't consider it an abbreviated form of
617 * a long option that starts with f. Otherwise there would be no
618 * way to give the -f short option.
620 * On the other hand, if there's a long option "fubar" and
621 * the ARGV-element is "-fu", do consider that an abbreviation of
622 * the long option, just like "--fu", and not "-f" with arg "u".
624 * This distinction seems to be the most useful approach. */
626 if (longopts != NULL &&
627 (argv[GNoptind][1] == '-' ||
629 (argv[GNoptind][2] || !my_index (optstring, argv[GNoptind][1])))))
632 const struct GNoption *p;
633 const struct GNoption *pfound = NULL;
639 for (nameend = nextchar; *nameend && *nameend != '='; nameend++)
642 /* Test all long options for either exact match
643 * or abbreviated matches. */
644 for (p = longopts, option_index = 0; p->name; p++, option_index++)
645 if (!strncmp (p->name, nextchar, nameend - nextchar))
647 if ((unsigned int) (nameend - nextchar) ==
648 (unsigned int) strlen (p->name))
650 /* Exact match found. */
652 indfound = option_index;
656 else if (pfound == NULL)
658 /* First nonexact match found. */
660 indfound = option_index;
663 /* Second or later nonexact match found. */
670 fprintf (stderr, _("%s: option `%s' is ambiguous\n"), argv[0],
672 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);
709 else if (pfound->has_arg == 1)
713 GNoptarg = argv[GNoptind++];
720 _("%s: option `%s' requires an argument\n"),
721 argv[0], argv[GNoptind - 1]);
723 nextchar += strlen (nextchar);
724 return (optstring[0] == ':') ? ':' : '?';
727 nextchar += strlen (nextchar);
729 *longind = option_index;
732 *(pfound->flag) = pfound->val;
738 /* Can't find it as a long option. If this is not getopt_long_only,
739 * or the option starts with '--' or is not a valid short
740 * option, then it's an error.
741 * Otherwise interpret it as a short option. */
742 if (!long_only || argv[GNoptind][1] == '-' ||
743 my_index (optstring, *nextchar) == NULL)
747 if (argv[GNoptind][1] == '-')
749 fprintf (stderr, _("%s: unrecognized option `--%s'\n"),
752 /* +option or -option */
753 fprintf (stderr, _("%s: unrecognized option `%c%s'\n"),
754 argv[0], argv[GNoptind][0], nextchar);
756 nextchar = (char *) "";
762 /* Look at and handle the next short option-character. */
765 char c = *nextchar++;
766 char *temp = my_index (optstring, c);
768 /* Increment `GNoptind' when we start to process its last character. */
769 if (*nextchar == '\0')
772 if (temp == NULL || c == ':')
777 /* 1003.2 specifies the format of this message. */
778 fprintf (stderr, _("%s: illegal option -- %c\n"), argv[0], c);
780 fprintf (stderr, _("%s: invalid option -- %c\n"), argv[0], c);
784 /* Convenience. Treat POSIX -W foo same as long option --foo */
785 if (temp[0] == 'W' && temp[1] == ';')
788 const struct GNoption *p;
789 const struct GNoption *pfound = NULL;
795 /* This is an option that requires an argument. */
796 if (*nextchar != '\0')
799 /* If we end this ARGV-element by taking the rest as an arg,
800 * we must advance to the next element now. */
803 else if (GNoptind == argc)
807 /* 1003.2 specifies the format of this message. */
808 fprintf (stderr, _("%s: option requires an argument -- %c\n"),
811 if (optstring[0] == ':')
818 /* We already incremented `GNoptind' once;
819 * increment it again when taking next ARGV-elt as argument. */
820 GNoptarg = argv[GNoptind++];
822 /* GNoptarg is now the argument, see if it's in the
823 * table of longopts. */
825 for (nextchar = nameend = GNoptarg; *nameend && *nameend != '=';
829 /* Test all long options for either exact match
830 * or abbreviated matches. */
831 if (longopts != NULL)
832 for (p = longopts, option_index = 0; p->name; p++, option_index++)
833 if (!strncmp (p->name, nextchar, nameend - nextchar))
835 if ((unsigned int) (nameend - nextchar) == strlen (p->name))
837 /* Exact match found. */
839 indfound = option_index;
843 else if (pfound == NULL)
845 /* First nonexact match found. */
847 indfound = option_index;
850 /* Second or later nonexact match found. */
856 fprintf (stderr, _("%s: option `-W %s' is ambiguous\n"),
857 argv[0], argv[GNoptind]);
858 nextchar += strlen (nextchar);
864 option_index = indfound;
867 /* Don't test has_arg with >, because some C compilers don't
868 * allow it to be used on enums. */
870 GNoptarg = nameend + 1;
874 fprintf (stderr, _("\
875 %s: option `-W %s' does not allow an argument\n"), argv[0], pfound->name);
877 nextchar += strlen (nextchar);
881 else if (pfound->has_arg == 1)
884 GNoptarg = argv[GNoptind++];
889 _("%s: option `%s' requires an argument\n"),
890 argv[0], argv[GNoptind - 1]);
891 nextchar += strlen (nextchar);
892 return optstring[0] == ':' ? ':' : '?';
895 nextchar += strlen (nextchar);
897 *longind = option_index;
900 *(pfound->flag) = pfound->val;
906 return 'W'; /* Let the application handle it. */
912 /* This is an option that accepts an argument optionally. */
913 if (*nextchar != '\0')
924 /* This is an option that requires an argument. */
925 if (*nextchar != '\0')
928 /* If we end this ARGV-element by taking the rest as an arg,
929 * we must advance to the next element now. */
932 else if (GNoptind == argc)
936 /* 1003.2 specifies the format of this message. */
938 _("%s: option requires an argument -- %c\n"),
941 if (optstring[0] == ':')
947 /* We already incremented `GNoptind' once;
948 * increment it again when taking next ARGV-elt as argument. */
949 GNoptarg = argv[GNoptind++];
958 GNgetopt_long (int argc, char *const *argv, const char *options,
959 const struct GNoption *long_options, int *opt_index)
961 return GN_getopt_internal (argc, argv, options, long_options, opt_index, 0);
964 /* ******************** now the GNUnet specific modifications... ********************* */
967 * Parse the command line.
969 * @param binaryOptions Name of application with option summary
970 * @param allOptions defined options and handlers
971 * @param argc number of arguments
972 * @param argv actual arguments
973 * @return index into argv with first non-option
974 * argument, or -1 on error
977 GNUNET_GETOPT_run (const char *binaryOptions,
978 const struct GNUNET_GETOPT_CommandLineOption *allOptions,
979 unsigned int argc, char *const *argv)
981 struct GNoption *long_options;
982 struct GNUNET_GETOPT_CommandLineProcessorContext clpc;
990 GNUNET_assert (argc > 0);
992 clpc.binaryName = argv[0];
993 clpc.binaryOptions = binaryOptions;
994 clpc.allOptions = allOptions;
998 while (allOptions[count].name != NULL)
1000 long_options = GNUNET_malloc (sizeof (struct GNoption) * (count + 1));
1001 shorts = GNUNET_malloc (count * 2 + 1);
1003 for (i = 0; i < count; i++)
1005 long_options[i].name = allOptions[i].name;
1006 long_options[i].has_arg = allOptions[i].require_argument;
1007 long_options[i].flag = NULL;
1008 long_options[i].val = allOptions[i].shortName;
1009 shorts[spos++] = allOptions[i].shortName;
1010 if (allOptions[i].require_argument != 0)
1011 shorts[spos++] = ':';
1013 long_options[count].name = NULL;
1014 long_options[count].has_arg = 0;
1015 long_options[count].flag = NULL;
1016 long_options[count].val = '\0';
1017 shorts[spos] = '\0';
1019 /* main getopt loop */
1020 while (cont == GNUNET_OK)
1022 int option_index = 0;
1024 c = GNgetopt_long (argc, argv, shorts, long_options, &option_index);
1026 if (c == GNUNET_SYSERR)
1027 break; /* No more flags to process */
1029 for (i = 0; i < count; i++)
1031 clpc.currentArgument = GNoptind - 1;
1032 if ((char) c == allOptions[i].shortName)
1035 allOptions[i].processor (&clpc, allOptions[i].scls,
1036 allOptions[i].name, GNoptarg);
1042 fprintf (stderr, _("Use --help to get a list of options.\n"));
1043 cont = GNUNET_SYSERR;
1047 GNUNET_free (shorts);
1048 GNUNET_free (long_options);
1049 if (cont == GNUNET_SYSERR)
1050 return GNUNET_SYSERR;
1054 /* end of getopt.c */