1/* Hierarchial argument parsing, layered over getopt.
2 Copyright (C) 1995-2016 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Written by Miles Bader <miles@gnu.ai.mit.edu>.
5
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
10
11 The GNU C Library 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 GNU
14 Lesser General Public License for more details.
15
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, see
18 <http://www.gnu.org/licenses/>. */
19
20#ifndef _ARGP_H
21#define _ARGP_H
22
23#include <stdio.h>
24#include <ctype.h>
25#include <getopt.h>
26#include <limits.h>
27
28#define __need_error_t
29#include <errno.h>
30
31#ifndef __THROW
32# define __THROW
33#endif
34#ifndef __NTH
35# define __NTH(fct) fct __THROW
36#endif
37
38#ifndef __attribute__
39/* This feature is available in gcc versions 2.5 and later. */
40# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || \
41 defined __STRICT_ANSI__
42# define __attribute__(Spec) /* empty */
43# endif
44/* The __-protected variants of `format' and `printf' attributes
45 are accepted by gcc versions 2.6.4 (effectively 2.7) and later. */
46# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7) || \
47 defined __STRICT_ANSI__
48# define __format__ format
49# define __printf__ printf
50# endif
51#endif
52
53/* GCC 2.95 and later have "__restrict"; C99 compilers have
54 "restrict", and "configure" may have defined "restrict". */
55#ifndef __restrict
56# if ! (2 < __GNUC__ || (2 == __GNUC__ && 95 <= __GNUC_MINOR__))
57# if defined restrict || 199901L <= __STDC_VERSION__
58# define __restrict restrict
59# else
60# define __restrict
61# endif
62# endif
63#endif
64
65#ifndef __error_t_defined
66typedef int error_t;
67# define __error_t_defined
68#endif
69
70#ifdef __cplusplus
71extern "C" {
72#endif
73
74/* A description of a particular option. A pointer to an array of
75 these is passed in the OPTIONS field of an argp structure. Each option
76 entry can correspond to one long option and/or one short option; more
77 names for the same option can be added by following an entry in an option
78 array with options having the OPTION_ALIAS flag set. */
79struct argp_option
80{
81 /* The long option name. For more than one name for the same option, you
82 can use following options with the OPTION_ALIAS flag set. */
83 const char *name;
84
85 /* What key is returned for this option. If > 0 and printable, then it's
86 also accepted as a short option. */
87 int key;
88
89 /* If non-NULL, this is the name of the argument associated with this
90 option, which is required unless the OPTION_ARG_OPTIONAL flag is set. */
91 const char *arg;
92
93 /* OPTION_ flags. */
94 int flags;
95
96 /* The doc string for this option. If both NAME and KEY are 0, This string
97 will be printed outdented from the normal option column, making it
98 useful as a group header (it will be the first thing printed in its
99 group); in this usage, it's conventional to end the string with a `:'. */
100 const char *doc;
101
102 /* The group this option is in. In a long help message, options are sorted
103 alphabetically within each group, and the groups presented in the order
104 0, 1, 2, ..., n, -m, ..., -2, -1. Every entry in an options array with
105 if this field 0 will inherit the group number of the previous entry, or
106 zero if it's the first one, unless its a group header (NAME and KEY both
107 0), in which case, the previous entry + 1 is the default. Automagic
108 options such as --help are put into group -1. */
109 int group;
110};
111
112/* The argument associated with this option is optional. */
113#define OPTION_ARG_OPTIONAL 0x1
114
115/* This option isn't displayed in any help messages. */
116#define OPTION_HIDDEN 0x2
117
118/* This option is an alias for the closest previous non-alias option. This
119 means that it will be displayed in the same help entry, and will inherit
120 fields other than NAME and KEY from the aliased option. */
121#define OPTION_ALIAS 0x4
122
123/* This option isn't actually an option (and so should be ignored by the
124 actual option parser), but rather an arbitrary piece of documentation that
125 should be displayed in much the same manner as the options. If this flag
126 is set, then the option NAME field is displayed unmodified (e.g., no `--'
127 prefix is added) at the left-margin (where a *short* option would normally
128 be displayed), and the documentation string in the normal place. For
129 purposes of sorting, any leading whitespace and punctuation is ignored,
130 except that if the first non-whitespace character is not `-', this entry
131 is displayed after all options (and OPTION_DOC entries with a leading `-')
132 in the same group. */
133#define OPTION_DOC 0x8
134
135/* This option shouldn't be included in `long' usage messages (but is still
136 included in help messages). This is mainly intended for options that are
137 completely documented in an argp's ARGS_DOC field, in which case including
138 the option in the generic usage list would be redundant. For instance,
139 if ARGS_DOC is "FOO BAR\n-x BLAH", and the `-x' option's purpose is to
140 distinguish these two cases, -x should probably be marked
141 OPTION_NO_USAGE. */
142#define OPTION_NO_USAGE 0x10
143
144struct argp; /* fwd declare this type */
145struct argp_state; /* " */
146struct argp_child; /* " */
147
148/* The type of a pointer to an argp parsing function. */
149typedef error_t (*argp_parser_t) (int __key, char *__arg,
150 struct argp_state *__state);
151
152/* What to return for unrecognized keys. For special ARGP_KEY_ keys, such
153 returns will simply be ignored. For user keys, this error will be turned
154 into EINVAL (if the call to argp_parse is such that errors are propagated
155 back to the user instead of exiting); returning EINVAL itself would result
156 in an immediate stop to parsing in *all* cases. */
157#define ARGP_ERR_UNKNOWN E2BIG /* Hurd should never need E2BIG. XXX */
158
159/* Special values for the KEY argument to an argument parsing function.
160 ARGP_ERR_UNKNOWN should be returned if they aren't understood.
161
162 The sequence of keys to a parsing function is either (where each
163 uppercased word should be prefixed by `ARGP_KEY_' and opt is a user key):
164
165 INIT opt... NO_ARGS END SUCCESS -- No non-option arguments at all
166 or INIT (opt | ARG)... END SUCCESS -- All non-option args parsed
167 or INIT (opt | ARG)... SUCCESS -- Some non-option arg unrecognized
168
169 The third case is where every parser returned ARGP_KEY_UNKNOWN for an
170 argument, in which case parsing stops at that argument (returning the
171 unparsed arguments to the caller of argp_parse if requested, or stopping
172 with an error message if not).
173
174 If an error occurs (either detected by argp, or because the parsing
175 function returned an error value), then the parser is called with
176 ARGP_KEY_ERROR, and no further calls are made. */
177
178/* This is not an option at all, but rather a command line argument. If a
179 parser receiving this key returns success, the fact is recorded, and the
180 ARGP_KEY_NO_ARGS case won't be used. HOWEVER, if while processing the
181 argument, a parser function decrements the NEXT field of the state it's
182 passed, the option won't be considered processed; this is to allow you to
183 actually modify the argument (perhaps into an option), and have it
184 processed again. */
185#define ARGP_KEY_ARG 0
186/* There are remaining arguments not parsed by any parser, which may be found
187 starting at (STATE->argv + STATE->next). If success is returned, but
188 STATE->next left untouched, it's assumed that all arguments were consume,
189 otherwise, the parser should adjust STATE->next to reflect any arguments
190 consumed. */
191#define ARGP_KEY_ARGS 0x1000006
192/* There are no more command line arguments at all. */
193#define ARGP_KEY_END 0x1000001
194/* Because it's common to want to do some special processing if there aren't
195 any non-option args, user parsers are called with this key if they didn't
196 successfully process any non-option arguments. Called just before
197 ARGP_KEY_END (where more general validity checks on previously parsed
198 arguments can take place). */
199#define ARGP_KEY_NO_ARGS 0x1000002
200/* Passed in before any parsing is done. Afterwards, the values of each
201 element of the CHILD_INPUT field, if any, in the state structure is
202 copied to each child's state to be the initial value of the INPUT field. */
203#define ARGP_KEY_INIT 0x1000003
204/* Use after all other keys, including SUCCESS & END. */
205#define ARGP_KEY_FINI 0x1000007
206/* Passed in when parsing has successfully been completed (even if there are
207 still arguments remaining). */
208#define ARGP_KEY_SUCCESS 0x1000004
209/* Passed in if an error occurs. */
210#define ARGP_KEY_ERROR 0x1000005
211
212/* An argp structure contains a set of options declarations, a function to
213 deal with parsing one, documentation string, a possible vector of child
214 argp's, and perhaps a function to filter help output. When actually
215 parsing options, getopt is called with the union of all the argp
216 structures chained together through their CHILD pointers, with conflicts
217 being resolved in favor of the first occurrence in the chain. */
218struct argp
219{
220 /* An array of argp_option structures, terminated by an entry with both
221 NAME and KEY having a value of 0. */
222 const struct argp_option *options;
223
224 /* What to do with an option from this structure. KEY is the key
225 associated with the option, and ARG is any associated argument (NULL if
226 none was supplied). If KEY isn't understood, ARGP_ERR_UNKNOWN should be
227 returned. If a non-zero, non-ARGP_ERR_UNKNOWN value is returned, then
228 parsing is stopped immediately, and that value is returned from
229 argp_parse(). For special (non-user-supplied) values of KEY, see the
230 ARGP_KEY_ definitions below. */
231 argp_parser_t parser;
232
233 /* A string describing what other arguments are wanted by this program. It
234 is only used by argp_usage to print the `Usage:' message. If it
235 contains newlines, the strings separated by them are considered
236 alternative usage patterns, and printed on separate lines (lines after
237 the first are prefix by ` or: ' instead of `Usage:'). */
238 const char *args_doc;
239
240 /* If non-NULL, a string containing extra text to be printed before and
241 after the options in a long help message (separated by a vertical tab
242 `\v' character). */
243 const char *doc;
244
245 /* A vector of argp_children structures, terminated by a member with a 0
246 argp field, pointing to child argps should be parsed with this one. Any
247 conflicts are resolved in favor of this argp, or early argps in the
248 CHILDREN list. This field is useful if you use libraries that supply
249 their own argp structure, which you want to use in conjunction with your
250 own. */
251 const struct argp_child *children;
252
253 /* If non-zero, this should be a function to filter the output of help
254 messages. KEY is either a key from an option, in which case TEXT is
255 that option's help text, or a special key from the ARGP_KEY_HELP_
256 defines, below, describing which other help text TEXT is. The function
257 should return either TEXT, if it should be used as-is, a replacement
258 string, which should be malloced, and will be freed by argp, or NULL,
259 meaning `print nothing'. The value for TEXT is *after* any translation
260 has been done, so if any of the replacement text also needs translation,
261 that should be done by the filter function. INPUT is either the input
262 supplied to argp_parse, or NULL, if argp_help was called directly. */
263 char *(*help_filter) (int __key, const char *__text, void *__input);
264
265 /* If non-zero the strings used in the argp library are translated using
266 the domain described by this string. Otherwise the currently installed
267 default domain is used. */
268 const char *argp_domain;
269};
270
271/* Possible KEY arguments to a help filter function. */
272#define ARGP_KEY_HELP_PRE_DOC 0x2000001 /* Help text preceeding options. */
273#define ARGP_KEY_HELP_POST_DOC 0x2000002 /* Help text following options. */
274#define ARGP_KEY_HELP_HEADER 0x2000003 /* Option header string. */
275#define ARGP_KEY_HELP_EXTRA 0x2000004 /* After all other documentation;
276 TEXT is NULL for this key. */
277/* Explanatory note emitted when duplicate option arguments have been
278 suppressed. */
279#define ARGP_KEY_HELP_DUP_ARGS_NOTE 0x2000005
280#define ARGP_KEY_HELP_ARGS_DOC 0x2000006 /* Argument doc string. */
281
282/* When an argp has a non-zero CHILDREN field, it should point to a vector of
283 argp_child structures, each of which describes a subsidiary argp. */
284struct argp_child
285{
286 /* The child parser. */
287 const struct argp *argp;
288
289 /* Flags for this child. */
290 int flags;
291
292 /* If non-zero, an optional header to be printed in help output before the
293 child options. As a side-effect, a non-zero value forces the child
294 options to be grouped together; to achieve this effect without actually
295 printing a header string, use a value of "". */
296 const char *header;
297
298 /* Where to group the child options relative to the other (`consolidated')
299 options in the parent argp; the values are the same as the GROUP field
300 in argp_option structs, but all child-groupings follow parent options at
301 a particular group level. If both this field and HEADER are zero, then
302 they aren't grouped at all, but rather merged with the parent options
303 (merging the child's grouping levels with the parents). */
304 int group;
305};
306
307/* Parsing state. This is provided to parsing functions called by argp,
308 which may examine and, as noted, modify fields. */
309struct argp_state
310{
311 /* The top level ARGP being parsed. */
312 const struct argp *root_argp;
313
314 /* The argument vector being parsed. May be modified. */
315 int argc;
316 char **argv;
317
318 /* The index in ARGV of the next arg that to be parsed. May be modified. */
319 int next;
320
321 /* The flags supplied to argp_parse. May be modified. */
322 unsigned flags;
323
324 /* While calling a parsing function with a key of ARGP_KEY_ARG, this is the
325 number of the current arg, starting at zero, and incremented after each
326 such call returns. At all other times, this is the number of such
327 arguments that have been processed. */
328 unsigned arg_num;
329
330 /* If non-zero, the index in ARGV of the first argument following a special
331 `--' argument (which prevents anything following being interpreted as an
332 option). Only set once argument parsing has proceeded past this point. */
333 int quoted;
334
335 /* An arbitrary pointer passed in from the user. */
336 void *input;
337 /* Values to pass to child parsers. This vector will be the same length as
338 the number of children for the current parser. */
339 void **child_inputs;
340
341 /* For the parser's use. Initialized to 0. */
342 void *hook;
343
344 /* The name used when printing messages. This is initialized to ARGV[0],
345 or PROGRAM_INVOCATION_NAME if that is unavailable. */
346 char *name;
347
348 /* Streams used when argp prints something. */
349 FILE *err_stream; /* For errors; initialized to stderr. */
350 FILE *out_stream; /* For information; initialized to stdout. */
351
352 void *pstate; /* Private, for use by argp. */
353};
354
355/* Flags for argp_parse (note that the defaults are those that are
356 convenient for program command line parsing): */
357
358/* Don't ignore the first element of ARGV. Normally (and always unless
359 ARGP_NO_ERRS is set) the first element of the argument vector is
360 skipped for option parsing purposes, as it corresponds to the program name
361 in a command line. */
362#define ARGP_PARSE_ARGV0 0x01
363
364/* Don't print error messages for unknown options to stderr; unless this flag
365 is set, ARGP_PARSE_ARGV0 is ignored, as ARGV[0] is used as the program
366 name in the error messages. This flag implies ARGP_NO_EXIT (on the
367 assumption that silent exiting upon errors is bad behaviour). */
368#define ARGP_NO_ERRS 0x02
369
370/* Don't parse any non-option args. Normally non-option args are parsed by
371 calling the parse functions with a key of ARGP_KEY_ARG, and the actual arg
372 as the value. Since it's impossible to know which parse function wants to
373 handle it, each one is called in turn, until one returns 0 or an error
374 other than ARGP_ERR_UNKNOWN; if an argument is handled by no one, the
375 argp_parse returns prematurely (but with a return value of 0). If all
376 args have been parsed without error, all parsing functions are called one
377 last time with a key of ARGP_KEY_END. This flag needn't normally be set,
378 as the normal behavior is to stop parsing as soon as some argument can't
379 be handled. */
380#define ARGP_NO_ARGS 0x04
381
382/* Parse options and arguments in the same order they occur on the command
383 line -- normally they're rearranged so that all options come first. */
384#define ARGP_IN_ORDER 0x08
385
386/* Don't provide the standard long option --help, which causes usage and
387 option help information to be output to stdout, and exit (0) called. */
388#define ARGP_NO_HELP 0x10
389
390/* Don't exit on errors (they may still result in error messages). */
391#define ARGP_NO_EXIT 0x20
392
393/* Use the gnu getopt `long-only' rules for parsing arguments. */
394#define ARGP_LONG_ONLY 0x40
395
396/* Turns off any message-printing/exiting options. */
397#define ARGP_SILENT (ARGP_NO_EXIT | ARGP_NO_ERRS | ARGP_NO_HELP)
398
399/* Parse the options strings in ARGC & ARGV according to the options in ARGP.
400 FLAGS is one of the ARGP_ flags above. If ARG_INDEX is non-NULL, the
401 index in ARGV of the first unparsed option is returned in it. If an
402 unknown option is present, ARGP_ERR_UNKNOWN is returned; if some parser
403 routine returned a non-zero value, it is returned; otherwise 0 is
404 returned. This function may also call exit unless the ARGP_NO_HELP flag
405 is set. INPUT is a pointer to a value to be passed in to the parser. */
406extern error_t argp_parse (const struct argp *__restrict __argp,
407 int __argc, char **__restrict __argv,
408 unsigned __flags, int *__restrict __arg_index,
409 void *__restrict __input);
410extern error_t __argp_parse (const struct argp *__restrict __argp,
411 int __argc, char **__restrict __argv,
412 unsigned __flags, int *__restrict __arg_index,
413 void *__restrict __input);
414
415/* Global variables. */
416
417/* If defined or set by the user program to a non-zero value, then a default
418 option --version is added (unless the ARGP_NO_HELP flag is used), which
419 will print this string followed by a newline and exit (unless the
420 ARGP_NO_EXIT flag is used). Overridden by ARGP_PROGRAM_VERSION_HOOK. */
421extern const char *argp_program_version;
422
423/* If defined or set by the user program to a non-zero value, then a default
424 option --version is added (unless the ARGP_NO_HELP flag is used), which
425 calls this function with a stream to print the version to and a pointer to
426 the current parsing state, and then exits (unless the ARGP_NO_EXIT flag is
427 used). This variable takes precedent over ARGP_PROGRAM_VERSION. */
428extern void (*argp_program_version_hook) (FILE *__restrict __stream,
429 struct argp_state *__restrict
430 __state);
431
432/* If defined or set by the user program, it should point to string that is
433 the bug-reporting address for the program. It will be printed by
434 argp_help if the ARGP_HELP_BUG_ADDR flag is set (as it is by various
435 standard help messages), embedded in a sentence that says something like
436 `Report bugs to ADDR.'. */
437extern const char *argp_program_bug_address;
438
439/* The exit status that argp will use when exiting due to a parsing error.
440 If not defined or set by the user program, this defaults to EX_USAGE from
441 <sysexits.h>. */
442extern error_t argp_err_exit_status;
443
444/* Flags for argp_help. */
445#define ARGP_HELP_USAGE 0x01 /* a Usage: message. */
446#define ARGP_HELP_SHORT_USAGE 0x02 /* " but don't actually print options. */
447#define ARGP_HELP_SEE 0x04 /* a `Try ... for more help' message. */
448#define ARGP_HELP_LONG 0x08 /* a long help message. */
449#define ARGP_HELP_PRE_DOC 0x10 /* doc string preceding long help. */
450#define ARGP_HELP_POST_DOC 0x20 /* doc string following long help. */
451#define ARGP_HELP_DOC (ARGP_HELP_PRE_DOC | ARGP_HELP_POST_DOC)
452#define ARGP_HELP_BUG_ADDR 0x40 /* bug report address */
453#define ARGP_HELP_LONG_ONLY 0x80 /* modify output appropriately to
454 reflect ARGP_LONG_ONLY mode. */
455
456/* These ARGP_HELP flags are only understood by argp_state_help. */
457#define ARGP_HELP_EXIT_ERR 0x100 /* Call exit(1) instead of returning. */
458#define ARGP_HELP_EXIT_OK 0x200 /* Call exit(0) instead of returning. */
459
460/* The standard thing to do after a program command line parsing error, if an
461 error message has already been printed. */
462#define ARGP_HELP_STD_ERR \
463 (ARGP_HELP_SEE | ARGP_HELP_EXIT_ERR)
464/* The standard thing to do after a program command line parsing error, if no
465 more specific error message has been printed. */
466#define ARGP_HELP_STD_USAGE \
467 (ARGP_HELP_SHORT_USAGE | ARGP_HELP_SEE | ARGP_HELP_EXIT_ERR)
468/* The standard thing to do in response to a --help option. */
469#define ARGP_HELP_STD_HELP \
470 (ARGP_HELP_SHORT_USAGE | ARGP_HELP_LONG | ARGP_HELP_EXIT_OK \
471 | ARGP_HELP_DOC | ARGP_HELP_BUG_ADDR)
472
473/* Output a usage message for ARGP to STREAM. FLAGS are from the set
474 ARGP_HELP_*. */
475extern void argp_help (const struct argp *__restrict __argp,
476 FILE *__restrict __stream,
477 unsigned __flags, char *__restrict __name);
478extern void __argp_help (const struct argp *__restrict __argp,
479 FILE *__restrict __stream, unsigned __flags,
480 char *__name);
481
482/* The following routines are intended to be called from within an argp
483 parsing routine (thus taking an argp_state structure as the first
484 argument). They may or may not print an error message and exit, depending
485 on the flags in STATE -- in any case, the caller should be prepared for
486 them *not* to exit, and should return an appropiate error after calling
487 them. [argp_usage & argp_error should probably be called argp_state_...,
488 but they're used often enough that they should be short] */
489
490/* Output, if appropriate, a usage message for STATE to STREAM. FLAGS are
491 from the set ARGP_HELP_*. */
492extern void argp_state_help (const struct argp_state *__restrict __state,
493 FILE *__restrict __stream,
494 unsigned int __flags);
495extern void __argp_state_help (const struct argp_state *__restrict __state,
496 FILE *__restrict __stream,
497 unsigned int __flags);
498
499/* Possibly output the standard usage message for ARGP to stderr and exit. */
500extern void argp_usage (const struct argp_state *__state);
501extern void __argp_usage (const struct argp_state *__state);
502
503/* If appropriate, print the printf string FMT and following args, preceded
504 by the program name and `:', to stderr, and followed by a `Try ... --help'
505 message, then exit (1). */
506extern void argp_error (const struct argp_state *__restrict __state,
507 const char *__restrict __fmt, ...)
508 __attribute__ ((__format__ (__printf__, 2, 3)));
509extern void __argp_error (const struct argp_state *__restrict __state,
510 const char *__restrict __fmt, ...)
511 __attribute__ ((__format__ (__printf__, 2, 3)));
512
513/* Similar to the standard gnu error-reporting function error(), but will
514 respect the ARGP_NO_EXIT and ARGP_NO_ERRS flags in STATE, and will print
515 to STATE->err_stream. This is useful for argument parsing code that is
516 shared between program startup (when exiting is desired) and runtime
517 option parsing (when typically an error code is returned instead). The
518 difference between this function and argp_error is that the latter is for
519 *parsing errors*, and the former is for other problems that occur during
520 parsing but don't reflect a (syntactic) problem with the input. */
521extern void argp_failure (const struct argp_state *__restrict __state,
522 int __status, int __errnum,
523 const char *__restrict __fmt, ...)
524 __attribute__ ((__format__ (__printf__, 4, 5)));
525extern void __argp_failure (const struct argp_state *__restrict __state,
526 int __status, int __errnum,
527 const char *__restrict __fmt, ...)
528 __attribute__ ((__format__ (__printf__, 4, 5)));
529
530/* Returns true if the option OPT is a valid short option. */
531extern int _option_is_short (const struct argp_option *__opt) __THROW;
532extern int __option_is_short (const struct argp_option *__opt) __THROW;
533
534/* Returns true if the option OPT is in fact the last (unused) entry in an
535 options array. */
536extern int _option_is_end (const struct argp_option *__opt) __THROW;
537extern int __option_is_end (const struct argp_option *__opt) __THROW;
538
539/* Return the input field for ARGP in the parser corresponding to STATE; used
540 by the help routines. */
541extern void *_argp_input (const struct argp *__restrict __argp,
542 const struct argp_state *__restrict __state)
543 __THROW;
544extern void *__argp_input (const struct argp *__restrict __argp,
545 const struct argp_state *__restrict __state)
546 __THROW;
547
548#ifdef __USE_EXTERN_INLINES
549
550# if !_LIBC
551# define __argp_usage argp_usage
552# define __argp_state_help argp_state_help
553# define __option_is_short _option_is_short
554# define __option_is_end _option_is_end
555# endif
556
557# ifndef ARGP_EI
558# define ARGP_EI __extern_inline
559# endif
560
561ARGP_EI void
562__argp_usage (const struct argp_state *__state)
563{
564 __argp_state_help (__state, stderr, ARGP_HELP_STD_USAGE);
565}
566
567ARGP_EI int
568__NTH (__option_is_short (const struct argp_option *__opt))
569{
570 if (__opt->flags & OPTION_DOC)
571 return 0;
572 else
573 {
574 int __key = __opt->key;
575 return __key > 0 && __key <= UCHAR_MAX && isprint (__key);
576 }
577}
578
579ARGP_EI int
580__NTH (__option_is_end (const struct argp_option *__opt))
581{
582 return !__opt->key && !__opt->name && !__opt->doc && !__opt->group;
583}
584
585# if !_LIBC
586# undef __argp_usage
587# undef __argp_state_help
588# undef __option_is_short
589# undef __option_is_end
590# endif
591#endif /* Use extern inlines. */
592
593#ifdef __cplusplus
594}
595#endif
596
597#endif /* argp.h */
598