1 /* Hierarchial argument parsing, layered over getopt
2 Copyright (C) 1995-2000, 2002, 2003, 2004 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Written by Miles Bader <miles@gnu.ai.mit.edu>.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License along
17 with this program; if not, write to the Free Software Foundation,
18 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
31 #include <getopt_int.h>
36 # define dgettext(domain, msgid) \
37 INTUSE(__dcgettext) (domain, msgid, LC_MESSAGES)
41 #define N_(msgid) (msgid)
44 #include "argp-namefrob.h"
46 #define alignof(type) offsetof (struct { char c; type x; }, x)
47 #define alignto(n, d) ((((n) + (d) - 1) / (d)) * (d))
49 /* Getopt return values. */
50 #define KEY_END (-1) /* The end of the options. */
51 #define KEY_ARG 1 /* A non-option argument. */
52 #define KEY_ERR '?' /* An error parsing the options. */
54 /* The meta-argument used to prevent any further arguments being interpreted
58 /* The number of bits we steal in a long-option value for our own use. */
59 #define GROUP_BITS CHAR_BIT
61 /* The number of bits available for the user value. */
62 #define USER_BITS ((sizeof ((struct option *)0)->val * CHAR_BIT) - GROUP_BITS)
63 #define USER_MASK ((1 << USER_BITS) - 1)
65 /* EZ alias for ARGP_ERR_UNKNOWN. */
66 #define EBADKEY ARGP_ERR_UNKNOWN
68 /* Default options. */
70 /* When argp is given the --HANG switch, _ARGP_HANG is set and argp will sleep
71 for one second intervals, decrementing _ARGP_HANG until it's zero. Thus
72 you can force the program to continue by attaching a debugger and setting
74 static volatile int _argp_hang;
76 #define OPT_PROGNAME -2
80 static const struct argp_option argp_default_options[] =
82 {"help", '?', 0, 0, N_("Give this help list"), -1},
83 {"usage", OPT_USAGE, 0, 0, N_("Give a short usage message"), 0},
84 {"program-name",OPT_PROGNAME,"NAME", OPTION_HIDDEN, N_("Set the program name"), 0},
85 {"HANG", OPT_HANG, "SECS", OPTION_ARG_OPTIONAL | OPTION_HIDDEN,
86 N_("Hang for SECS seconds (default 3600)"), 0},
87 {NULL, 0, 0, 0, NULL, 0}
91 argp_default_parser (int key, char *arg, struct argp_state *state)
96 __argp_state_help (state, state->out_stream, ARGP_HELP_STD_HELP);
99 __argp_state_help (state, state->out_stream,
100 ARGP_HELP_USAGE | ARGP_HELP_EXIT_OK);
103 case OPT_PROGNAME: /* Set the program name. */
104 #if defined _LIBC || HAVE_DECL_PROGRAM_INVOCATION_NAME
105 program_invocation_name = arg;
107 /* [Note that some systems only have PROGRAM_INVOCATION_SHORT_NAME (aka
108 __PROGNAME), in which case, PROGRAM_INVOCATION_NAME is just defined
109 to be that, so we have to be a bit careful here.] */
111 /* Update what we use for messages. */
112 state->name = strrchr (arg, '/');
118 #if defined _LIBC || HAVE_DECL_PROGRAM_INVOCATION_SHORT_NAME
119 program_invocation_short_name = state->name;
122 if ((state->flags & (ARGP_PARSE_ARGV0 | ARGP_NO_ERRS))
124 /* Update what getopt uses too. */
125 state->argv[0] = arg;
130 _argp_hang = atoi (arg ? arg : "3600");
131 while (_argp_hang-- > 0)
141 static const struct argp argp_default_argp =
142 {argp_default_options, &argp_default_parser, NULL, NULL, NULL, NULL, "libc"};
145 static const struct argp_option argp_version_options[] =
147 {"version", 'V', 0, 0, N_("Print program version"), -1},
148 {NULL, 0, 0, 0, NULL, 0}
152 argp_version_parser (int key, char *arg, struct argp_state *state)
157 if (argp_program_version_hook)
158 (*argp_program_version_hook) (state->out_stream, state);
159 else if (argp_program_version)
160 fprintf (state->out_stream, "%s\n", argp_program_version);
162 __argp_error (state, dgettext (state->root_argp->argp_domain,
163 "(PROGRAM ERROR) No version known!?"));
164 if (! (state->flags & ARGP_NO_EXIT))
173 static const struct argp argp_version_argp =
174 {argp_version_options, &argp_version_parser, NULL, NULL, NULL, NULL, "libc"};
176 /* Returns the offset into the getopt long options array LONG_OPTIONS of a
177 long option with called NAME, or -1 if none is found. Passing NULL as
178 NAME will return the number of options. */
180 find_long_option (struct option *long_options, const char *name)
182 struct option *l = long_options;
183 while (l->name != NULL)
184 if (name != NULL && strcmp (l->name, name) == 0)
185 return l - long_options;
189 return l - long_options;
195 /* The state of a `group' during parsing. Each group corresponds to a
196 particular argp structure from the tree of such descending from the top
197 level argp passed to argp_parse. */
200 /* This group's parsing function. */
201 argp_parser_t parser;
203 /* Which argp this group is from. */
204 const struct argp *argp;
206 /* Points to the point in SHORT_OPTS corresponding to the end of the short
207 options for this group. We use it to determine from which group a
208 particular short options is from. */
211 /* The number of non-option args sucessfully handled by this parser. */
212 unsigned args_processed;
214 /* This group's parser's parent's group. */
215 struct group *parent;
216 unsigned parent_index; /* And the our position in the parent. */
218 /* These fields are swapped into and out of the state structure when
219 calling this group's parser. */
220 void *input, **child_inputs;
224 /* Call GROUP's parser with KEY and ARG, swapping any group-specific info
225 from STATE before calling, and back into state afterwards. If GROUP has
226 no parser, EBADKEY is returned. */
228 group_parse (struct group *group, struct argp_state *state, int key, char *arg)
233 state->hook = group->hook;
234 state->input = group->input;
235 state->child_inputs = group->child_inputs;
236 state->arg_num = group->args_processed;
237 err = (*group->parser)(key, arg, state);
238 group->hook = state->hook;
247 const struct argp *argp;
249 /* SHORT_OPTS is the getopt short options string for the union of all the
250 groups of options. */
252 /* LONG_OPTS is the array of getop long option structures for the union of
253 all the groups of options. */
254 struct option *long_opts;
255 /* OPT_DATA is the getopt data used for the re-entrant getopt. */
256 struct _getopt_data opt_data;
258 /* States of the various parsing groups. */
259 struct group *groups;
260 /* The end of the GROUPS array. */
261 struct group *egroup;
262 /* An vector containing storage for the CHILD_INPUTS field in all groups. */
265 /* True if we think using getopt is still useful; if false, then
266 remaining arguments are just passed verbatim with ARGP_KEY_ARG. This is
267 cleared whenever getopt returns KEY_END, but may be set again if the user
268 moves the next argument pointer backwards. */
271 /* State block supplied to parsing routines. */
272 struct argp_state state;
274 /* Memory used by this parser. */
278 /* The next usable entries in the various parser tables being filled in by
280 struct parser_convert_state
282 struct parser *parser;
284 struct option *long_end;
285 void **child_inputs_end;
288 /* Converts all options in ARGP (which is put in GROUP) and ancestors
289 into getopt options stored in SHORT_OPTS and LONG_OPTS; SHORT_END and
290 CVT->LONG_END are the points at which new options are added. Returns the
291 next unused group entry. CVT holds state used during the conversion. */
292 static struct group *
293 convert_options (const struct argp *argp,
294 struct group *parent, unsigned parent_index,
295 struct group *group, struct parser_convert_state *cvt)
297 /* REAL is the most recent non-alias value of OPT. */
298 const struct argp_option *real = argp->options;
299 const struct argp_child *children = argp->children;
301 if (real || argp->parser)
303 const struct argp_option *opt;
306 for (opt = real; !__option_is_end (opt); opt++)
308 if (! (opt->flags & OPTION_ALIAS))
309 /* OPT isn't an alias, so we can use values from it. */
312 if (! (real->flags & OPTION_DOC))
313 /* A real option (not just documentation). */
315 if (__option_is_short (opt))
316 /* OPT can be used as a short option. */
318 *cvt->short_end++ = opt->key;
321 *cvt->short_end++ = ':';
322 if (real->flags & OPTION_ARG_OPTIONAL)
323 *cvt->short_end++ = ':';
325 *cvt->short_end = '\0'; /* keep 0 terminated */
329 && find_long_option (cvt->parser->long_opts, opt->name) < 0)
330 /* OPT can be used as a long option. */
332 cvt->long_end->name = opt->name;
333 cvt->long_end->has_arg =
335 ? (real->flags & OPTION_ARG_OPTIONAL
339 cvt->long_end->flag = 0;
340 /* we add a disambiguating code to all the user's
341 values (which is removed before we actually call
342 the function to parse the value); this means that
343 the user loses use of the high 8 bits in all his
344 values (the sign of the lower bits is preserved
347 ((opt->key | real->key) & USER_MASK)
348 + (((group - cvt->parser->groups) + 1) << USER_BITS);
350 /* Keep the LONG_OPTS list terminated. */
351 (++cvt->long_end)->name = NULL;
356 group->parser = argp->parser;
358 group->short_end = cvt->short_end;
359 group->args_processed = 0;
360 group->parent = parent;
361 group->parent_index = parent_index;
364 group->child_inputs = 0;
367 /* Assign GROUP's CHILD_INPUTS field some space from
368 CVT->child_inputs_end.*/
370 unsigned num_children = 0;
371 while (children[num_children].argp)
373 group->child_inputs = cvt->child_inputs_end;
374 cvt->child_inputs_end += num_children;
385 while (children->argp)
387 convert_options (children++->argp, parent, index++, group, cvt);
393 /* Find the merged set of getopt options, with keys appropiately prefixed. */
395 parser_convert (struct parser *parser, const struct argp *argp, int flags)
397 struct parser_convert_state cvt;
400 cvt.short_end = parser->short_opts;
401 cvt.long_end = parser->long_opts;
402 cvt.child_inputs_end = parser->child_inputs;
404 if (flags & ARGP_IN_ORDER)
405 *cvt.short_end++ = '-';
406 else if (flags & ARGP_NO_ARGS)
407 *cvt.short_end++ = '+';
408 *cvt.short_end = '\0';
410 cvt.long_end->name = NULL;
415 parser->egroup = convert_options (argp, 0, 0, parser->groups, &cvt);
417 parser->egroup = parser->groups; /* No parsers at all! */
420 /* Lengths of various parser fields which we will allocated. */
423 size_t short_len; /* Getopt short options string. */
424 size_t long_len; /* Getopt long options vector. */
425 size_t num_groups; /* Group structures we allocate. */
426 size_t num_child_inputs; /* Child input slots. */
429 /* For ARGP, increments the NUM_GROUPS field in SZS by the total number of
430 argp structures descended from it, and the SHORT_LEN & LONG_LEN fields by
431 the maximum lengths of the resulting merged getopt short options string and
432 long-options array, respectively. */
434 calc_sizes (const struct argp *argp, struct parser_sizes *szs)
436 const struct argp_child *child = argp->children;
437 const struct argp_option *opt = argp->options;
439 if (opt || argp->parser)
445 while (!__option_is_end (opt++))
447 szs->short_len += num_opts * 3; /* opt + up to 2 `:'s */
448 szs->long_len += num_opts;
455 calc_sizes ((child++)->argp, szs);
456 szs->num_child_inputs++;
460 /* Initializes PARSER to parse ARGP in a manner described by FLAGS. */
462 parser_init (struct parser *parser, const struct argp *argp,
463 int argc, char **argv, int flags, void *input)
467 struct parser_sizes szs;
468 struct _getopt_data opt_data = _GETOPT_DATA_INITIALIZER;
475 szs.short_len = (flags & ARGP_NO_ARGS) ? 0 : 1;
478 szs.num_child_inputs = 0;
481 calc_sizes (argp, &szs);
483 /* Lengths of the various bits of storage used by PARSER. */
484 glen = (szs.num_groups + 1) * sizeof (struct group);
485 gsum = alignto (glen, alignof (void *));
486 clen = szs.num_child_inputs * sizeof (void *);
487 csum = alignto (gsum + clen, alignof (struct option));
488 llen = (szs.long_len + 1) * sizeof (struct option);
489 lsum = alignto (csum + llen, alignof (char));
490 slen = szs.short_len + 1;
493 parser->storage = malloc (ssum);
494 if (! parser->storage)
497 storage = parser->storage;
498 parser->groups = parser->storage;
499 parser->child_inputs = (void **) (storage + gsum);
500 parser->long_opts = (struct option *) (storage + csum);
501 parser->short_opts = storage + lsum;
502 parser->opt_data = opt_data;
504 memset (parser->child_inputs, 0, clen);
505 parser_convert (parser, argp, flags);
507 memset (&parser->state, 0, sizeof (struct argp_state));
508 parser->state.root_argp = parser->argp;
509 parser->state.argc = argc;
510 parser->state.argv = argv;
511 parser->state.flags = flags;
512 parser->state.err_stream = stderr;
513 parser->state.out_stream = stdout;
514 parser->state.next = 0; /* Tell getopt to initialize. */
515 parser->state.pstate = parser;
517 parser->try_getopt = 1;
519 /* Call each parser for the first time, giving it a chance to propagate
520 values to child parsers. */
521 if (parser->groups < parser->egroup)
522 parser->groups->input = input;
523 for (group = parser->groups;
524 group < parser->egroup && (!err || err == EBADKEY);
528 /* If a child parser, get the initial input value from the parent. */
529 group->input = group->parent->child_inputs[group->parent_index];
532 && group->argp->children && group->argp->children->argp)
533 /* For the special case where no parsing function is supplied for an
534 argp, propagate its input to its first child, if any (this just
535 makes very simple wrapper argps more convenient). */
536 group->child_inputs[0] = group->input;
538 err = group_parse (group, &parser->state, ARGP_KEY_INIT, 0);
541 err = 0; /* Some parser didn't understand. */
546 if (parser->state.flags & ARGP_NO_ERRS)
548 parser->opt_data.opterr = 0;
549 if (parser->state.flags & ARGP_PARSE_ARGV0)
550 /* getopt always skips ARGV[0], so we have to fake it out. As long
551 as OPTERR is 0, then it shouldn't actually try to access it. */
552 parser->state.argv--, parser->state.argc++;
555 parser->opt_data.opterr = 1; /* Print error messages. */
557 if (parser->state.argv == argv && argv[0])
558 /* There's an argv[0]; use it for messages. */
560 char *short_name = strrchr (argv[0], '/');
561 parser->state.name = short_name ? short_name + 1 : argv[0];
564 parser->state.name = __argp_short_program_name ();
569 /* Free any storage consumed by PARSER (but not PARSER itself). */
571 parser_finalize (struct parser *parser,
572 error_t err, int arg_ebadkey, int *end_index)
576 if (err == EBADKEY && arg_ebadkey)
577 /* Suppress errors generated by unparsed arguments. */
582 if (parser->state.next == parser->state.argc)
583 /* We successfully parsed all arguments! Call all the parsers again,
584 just a few more times... */
586 for (group = parser->groups;
587 group < parser->egroup && (!err || err==EBADKEY);
589 if (group->args_processed == 0)
590 err = group_parse (group, &parser->state, ARGP_KEY_NO_ARGS, 0);
591 for (group = parser->egroup - 1;
592 group >= parser->groups && (!err || err==EBADKEY);
594 err = group_parse (group, &parser->state, ARGP_KEY_END, 0);
597 err = 0; /* Some parser didn't understand. */
599 /* Tell the user that all arguments are parsed. */
601 *end_index = parser->state.next;
604 /* Return any remaining arguments to the user. */
605 *end_index = parser->state.next;
607 /* No way to return the remaining arguments, they must be bogus. */
609 if (!(parser->state.flags & ARGP_NO_ERRS)
610 && parser->state.err_stream)
611 fprintf (parser->state.err_stream,
612 dgettext (parser->argp->argp_domain,
613 "%s: Too many arguments\n"),
619 /* Okay, we're all done, with either an error or success; call the parsers
620 to indicate which one. */
624 /* Maybe print an error message. */
626 /* An appropriate message describing what the error was should have
627 been printed earlier. */
628 __argp_state_help (&parser->state, parser->state.err_stream,
631 /* Since we didn't exit, give each parser an error indication. */
632 for (group = parser->groups; group < parser->egroup; group++)
633 group_parse (group, &parser->state, ARGP_KEY_ERROR, 0);
636 /* Notify parsers of success, and propagate back values from parsers. */
638 /* We pass over the groups in reverse order so that child groups are
639 given a chance to do there processing before passing back a value to
641 for (group = parser->egroup - 1
642 ; group >= parser->groups && (!err || err == EBADKEY)
644 err = group_parse (group, &parser->state, ARGP_KEY_SUCCESS, 0);
646 err = 0; /* Some parser didn't understand. */
649 /* Call parsers once more, to do any final cleanup. Errors are ignored. */
650 for (group = parser->egroup - 1; group >= parser->groups; group--)
651 group_parse (group, &parser->state, ARGP_KEY_FINI, 0);
656 free (parser->storage);
661 /* Call the user parsers to parse the non-option argument VAL, at the current
662 position, returning any error. The state NEXT pointer is assumed to have
663 been adjusted (by getopt) to point after this argument; this function will
664 adjust it correctly to reflect however many args actually end up being
667 parser_parse_arg (struct parser *parser, char *val)
669 /* Save the starting value of NEXT, first adjusting it so that the arg
670 we're parsing is again the front of the arg vector. */
671 int index = --parser->state.next;
672 error_t err = EBADKEY;
674 int key = 0; /* Which of ARGP_KEY_ARG[S] we used. */
676 /* Try to parse the argument in each parser. */
677 for (group = parser->groups
678 ; group < parser->egroup && err == EBADKEY
681 parser->state.next++; /* For ARGP_KEY_ARG, consume the arg. */
683 err = group_parse (group, &parser->state, key, val);
686 /* This parser doesn't like ARGP_KEY_ARG; try ARGP_KEY_ARGS instead. */
688 parser->state.next--; /* For ARGP_KEY_ARGS, put back the arg. */
690 err = group_parse (group, &parser->state, key, 0);
696 if (key == ARGP_KEY_ARGS)
697 /* The default for ARGP_KEY_ARGS is to assume that if NEXT isn't
698 changed by the user, *all* arguments should be considered
700 parser->state.next = parser->state.argc;
702 if (parser->state.next > index)
703 /* Remember that we successfully processed a non-option
704 argument -- but only if the user hasn't gotten tricky and set
706 (--group)->args_processed += (parser->state.next - index);
708 /* The user wants to reparse some args, give getopt another try. */
709 parser->try_getopt = 1;
715 /* Call the user parsers to parse the option OPT, with argument VAL, at the
716 current position, returning any error. */
718 parser_parse_opt (struct parser *parser, int opt, char *val)
720 /* The group key encoded in the high bits; 0 for short opts or
721 group_number + 1 for long opts. */
722 int group_key = opt >> USER_BITS;
723 error_t err = EBADKEY;
726 /* A short option. By comparing OPT's position in SHORT_OPTS to the
727 various starting positions in each group's SHORT_END field, we can
728 determine which group OPT came from. */
731 char *short_index = strchr (parser->short_opts, opt);
734 for (group = parser->groups; group < parser->egroup; group++)
735 if (group->short_end > short_index)
737 err = group_parse (group, &parser->state, opt,
738 parser->opt_data.optarg);
743 /* A long option. We use shifts instead of masking for extracting
744 the user value in order to preserve the sign. */
746 group_parse (&parser->groups[group_key - 1], &parser->state,
747 (opt << GROUP_BITS) >> GROUP_BITS,
748 parser->opt_data.optarg);
751 /* At least currently, an option not recognized is an error in the
752 parser, because we pre-compute which parser is supposed to deal
755 static const char bad_key_err[] =
756 N_("(PROGRAM ERROR) Option should have been recognized!?");
758 __argp_error (&parser->state, "-%c: %s", opt,
759 dgettext (parser->argp->argp_domain, bad_key_err));
762 struct option *long_opt = parser->long_opts;
763 while (long_opt->val != opt && long_opt->name)
765 __argp_error (&parser->state, "--%s: %s",
766 long_opt->name ? long_opt->name : "???",
767 dgettext (parser->argp->argp_domain, bad_key_err));
774 /* Parse the next argument in PARSER (as indicated by PARSER->state.next).
775 Any error from the parsers is returned, and *ARGP_EBADKEY indicates
776 whether a value of EBADKEY is due to an unrecognized argument (which is
777 generally not fatal). */
779 parser_parse_next (struct parser *parser, int *arg_ebadkey)
784 if (parser->state.quoted && parser->state.next < parser->state.quoted)
785 /* The next argument pointer has been moved to before the quoted
786 region, so pretend we never saw the quoting `--', and give getopt
787 another chance. If the user hasn't removed it, getopt will just
789 parser->state.quoted = 0;
791 if (parser->try_getopt && !parser->state.quoted)
792 /* Give getopt a chance to parse this. */
794 /* Put it back in OPTIND for getopt. */
795 parser->opt_data.optind = parser->state.next;
796 /* Distinguish KEY_ERR from a real option. */
797 parser->opt_data.optopt = KEY_END;
798 if (parser->state.flags & ARGP_LONG_ONLY)
799 opt = _getopt_long_only_r (parser->state.argc, parser->state.argv,
800 parser->short_opts, parser->long_opts, 0,
803 opt = _getopt_long_r (parser->state.argc, parser->state.argv,
804 parser->short_opts, parser->long_opts, 0,
806 /* And see what getopt did. */
807 parser->state.next = parser->opt_data.optind;
810 /* Getopt says there are no more options, so stop using
811 getopt; we'll continue if necessary on our own. */
813 parser->try_getopt = 0;
814 if (parser->state.next > 1
815 && strcmp (parser->state.argv[parser->state.next - 1], QUOTE)
817 /* Not only is this the end of the options, but it's a
818 `quoted' region, which may have args that *look* like
819 options, so we definitely shouldn't try to use getopt past
820 here, whatever happens. */
821 parser->state.quoted = parser->state.next;
823 else if (opt == KEY_ERR && parser->opt_data.optopt != KEY_END)
824 /* KEY_ERR can have the same value as a valid user short
825 option, but in the case of a real error, getopt sets OPTOPT
826 to the offending character, which can never be KEY_END. */
837 /* We're past what getopt considers the options. */
838 if (parser->state.next >= parser->state.argc
839 || (parser->state.flags & ARGP_NO_ARGS))
840 /* Indicate that we're done. */
846 /* A non-option arg; simulate what getopt might have done. */
849 parser->opt_data.optarg = parser->state.argv[parser->state.next++];
854 /* A non-option argument; try each parser in turn. */
855 err = parser_parse_arg (parser, parser->opt_data.optarg);
857 err = parser_parse_opt (parser, opt, parser->opt_data.optarg);
860 *arg_ebadkey = (opt == KEY_END || opt == KEY_ARG);
865 /* Parse the options strings in ARGC & ARGV according to the argp in ARGP.
866 FLAGS is one of the ARGP_ flags above. If END_INDEX is non-NULL, the
867 index in ARGV of the first unparsed option is returned in it. If an
868 unknown option is present, EINVAL is returned; if some parser routine
869 returned a non-zero value, it is returned; otherwise 0 is returned. */
871 __argp_parse (const struct argp *argp, int argc, char **argv, unsigned flags,
872 int *end_index, void *input)
875 struct parser parser;
877 /* If true, then err == EBADKEY is a result of a non-option argument failing
878 to be parsed (which in some cases isn't actually an error). */
881 if (! (flags & ARGP_NO_HELP))
882 /* Add our own options. */
884 struct argp_child *child = alloca (4 * sizeof (struct argp_child));
885 struct argp *top_argp = alloca (sizeof (struct argp));
887 /* TOP_ARGP has no options, it just serves to group the user & default
889 memset (top_argp, 0, sizeof (*top_argp));
890 top_argp->children = child;
892 memset (child, 0, 4 * sizeof (struct argp_child));
895 (child++)->argp = argp;
896 (child++)->argp = &argp_default_argp;
897 if (argp_program_version || argp_program_version_hook)
898 (child++)->argp = &argp_version_argp;
904 /* Construct a parser for these arguments. */
905 err = parser_init (&parser, argp, argc, argv, flags, input);
911 err = parser_parse_next (&parser, &arg_ebadkey);
912 err = parser_finalize (&parser, err, arg_ebadkey, end_index);
918 weak_alias (__argp_parse, argp_parse)
921 /* Return the input field for ARGP in the parser corresponding to STATE; used
922 by the help routines. */
924 __argp_input (const struct argp *argp, const struct argp_state *state)
929 struct parser *parser = state->pstate;
931 for (group = parser->groups; group < parser->egroup; group++)
932 if (group->argp == argp)
939 weak_alias (__argp_input, _argp_input)