Fix gdoc-error invocation.
[shishi.git] / gl / argp.h
blob573b4024e6bed6b79cb6754f88a17149d57880ef
1 /* Hierarchial argument parsing, layered over getopt.
2 Copyright (C) 1995,1996,1997,1998,1999,2003 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)
9 any later version.
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. */
20 #ifndef _ARGP_H
21 #define _ARGP_H
23 #include <stdio.h>
24 #include <ctype.h>
25 #include <getopt.h>
27 #define __need_error_t
28 #include <errno.h>
30 #ifndef __const
31 # define __const const
32 #endif
34 #ifndef __THROW
35 # define __THROW
36 #endif
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 # define __attribute__(Spec) /* empty */
42 # endif
43 /* The __-protected variants of `format' and `printf' attributes
44 are accepted by gcc versions 2.6.4 (effectively 2.7) and later. */
45 # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
46 # define __format__ format
47 # define __printf__ printf
48 # endif
49 #endif
51 #ifndef __error_t_defined
52 typedef int error_t;
53 # define __error_t_defined
54 #endif
56 #ifdef __cplusplus
57 extern "C" {
58 #endif
60 /* A description of a particular option. A pointer to an array of
61 these is passed in the OPTIONS field of an argp structure. Each option
62 entry can correspond to one long option and/or one short option; more
63 names for the same option can be added by following an entry in an option
64 array with options having the OPTION_ALIAS flag set. */
65 struct argp_option
67 /* The long option name. For more than one name for the same option, you
68 can use following options with the OPTION_ALIAS flag set. */
69 __const char *name;
71 /* What key is returned for this option. If > 0 and printable, then it's
72 also accepted as a short option. */
73 int key;
75 /* If non-NULL, this is the name of the argument associated with this
76 option, which is required unless the OPTION_ARG_OPTIONAL flag is set. */
77 __const char *arg;
79 /* OPTION_ flags. */
80 int flags;
82 /* The doc string for this option. If both NAME and KEY are 0, This string
83 will be printed outdented from the normal option column, making it
84 useful as a group header (it will be the first thing printed in its
85 group); in this usage, it's conventional to end the string with a `:'. */
86 __const char *doc;
88 /* The group this option is in. In a long help message, options are sorted
89 alphabetically within each group, and the groups presented in the order
90 0, 1, 2, ..., n, -m, ..., -2, -1. Every entry in an options array with
91 if this field 0 will inherit the group number of the previous entry, or
92 zero if it's the first one, unless its a group header (NAME and KEY both
93 0), in which case, the previous entry + 1 is the default. Automagic
94 options such as --help are put into group -1. */
95 int group;
98 /* The argument associated with this option is optional. */
99 #define OPTION_ARG_OPTIONAL 0x1
101 /* This option isn't displayed in any help messages. */
102 #define OPTION_HIDDEN 0x2
104 /* This option is an alias for the closest previous non-alias option. This
105 means that it will be displayed in the same help entry, and will inherit
106 fields other than NAME and KEY from the aliased option. */
107 #define OPTION_ALIAS 0x4
109 /* This option isn't actually an option (and so should be ignored by the
110 actual option parser), but rather an arbitrary piece of documentation that
111 should be displayed in much the same manner as the options. If this flag
112 is set, then the option NAME field is displayed unmodified (e.g., no `--'
113 prefix is added) at the left-margin (where a *short* option would normally
114 be displayed), and the documentation string in the normal place. For
115 purposes of sorting, any leading whitespace and punctuation is ignored,
116 except that if the first non-whitespace character is not `-', this entry
117 is displayed after all options (and OPTION_DOC entries with a leading `-')
118 in the same group. */
119 #define OPTION_DOC 0x8
121 /* This option shouldn't be included in `long' usage messages (but is still
122 included in help messages). This is mainly intended for options that are
123 completely documented in an argp's ARGS_DOC field, in which case including
124 the option in the generic usage list would be redundant. For instance,
125 if ARGS_DOC is "FOO BAR\n-x BLAH", and the `-x' option's purpose is to
126 distinguish these two cases, -x should probably be marked
127 OPTION_NO_USAGE. */
128 #define OPTION_NO_USAGE 0x10
130 struct argp; /* fwd declare this type */
131 struct argp_state; /* " */
132 struct argp_child; /* " */
134 /* The type of a pointer to an argp parsing function. */
135 typedef error_t (*argp_parser_t) (int key, char *arg,
136 struct argp_state *state);
138 /* What to return for unrecognized keys. For special ARGP_KEY_ keys, such
139 returns will simply be ignored. For user keys, this error will be turned
140 into EINVAL (if the call to argp_parse is such that errors are propagated
141 back to the user instead of exiting); returning EINVAL itself would result
142 in an immediate stop to parsing in *all* cases. */
143 #define ARGP_ERR_UNKNOWN E2BIG /* Hurd should never need E2BIG. XXX */
145 /* Special values for the KEY argument to an argument parsing function.
146 ARGP_ERR_UNKNOWN should be returned if they aren't understood.
148 The sequence of keys to a parsing function is either (where each
149 uppercased word should be prefixed by `ARGP_KEY_' and opt is a user key):
151 INIT opt... NO_ARGS END SUCCESS -- No non-option arguments at all
152 or INIT (opt | ARG)... END SUCCESS -- All non-option args parsed
153 or INIT (opt | ARG)... SUCCESS -- Some non-option arg unrecognized
155 The third case is where every parser returned ARGP_KEY_UNKNOWN for an
156 argument, in which case parsing stops at that argument (returning the
157 unparsed arguments to the caller of argp_parse if requested, or stopping
158 with an error message if not).
160 If an error occurs (either detected by argp, or because the parsing
161 function returned an error value), then the parser is called with
162 ARGP_KEY_ERROR, and no further calls are made. */
164 /* This is not an option at all, but rather a command line argument. If a
165 parser receiving this key returns success, the fact is recorded, and the
166 ARGP_KEY_NO_ARGS case won't be used. HOWEVER, if while processing the
167 argument, a parser function decrements the NEXT field of the state it's
168 passed, the option won't be considered processed; this is to allow you to
169 actually modify the argument (perhaps into an option), and have it
170 processed again. */
171 #define ARGP_KEY_ARG 0
172 /* There are remaining arguments not parsed by any parser, which may be found
173 starting at (STATE->argv + STATE->next). If success is returned, but
174 STATE->next left untouched, it's assumed that all arguments were consume,
175 otherwise, the parser should adjust STATE->next to reflect any arguments
176 consumed. */
177 #define ARGP_KEY_ARGS 0x1000006
178 /* There are no more command line arguments at all. */
179 #define ARGP_KEY_END 0x1000001
180 /* Because it's common to want to do some special processing if there aren't
181 any non-option args, user parsers are called with this key if they didn't
182 successfully process any non-option arguments. Called just before
183 ARGP_KEY_END (where more general validity checks on previously parsed
184 arguments can take place). */
185 #define ARGP_KEY_NO_ARGS 0x1000002
186 /* Passed in before any parsing is done. Afterwards, the values of each
187 element of the CHILD_INPUT field, if any, in the state structure is
188 copied to each child's state to be the initial value of the INPUT field. */
189 #define ARGP_KEY_INIT 0x1000003
190 /* Use after all other keys, including SUCCESS & END. */
191 #define ARGP_KEY_FINI 0x1000007
192 /* Passed in when parsing has successfully been completed (even if there are
193 still arguments remaining). */
194 #define ARGP_KEY_SUCCESS 0x1000004
195 /* Passed in if an error occurs. */
196 #define ARGP_KEY_ERROR 0x1000005
198 /* An argp structure contains a set of options declarations, a function to
199 deal with parsing one, documentation string, a possible vector of child
200 argp's, and perhaps a function to filter help output. When actually
201 parsing options, getopt is called with the union of all the argp
202 structures chained together through their CHILD pointers, with conflicts
203 being resolved in favor of the first occurrence in the chain. */
204 struct argp
206 /* An array of argp_option structures, terminated by an entry with both
207 NAME and KEY having a value of 0. */
208 __const struct argp_option *options;
210 /* What to do with an option from this structure. KEY is the key
211 associated with the option, and ARG is any associated argument (NULL if
212 none was supplied). If KEY isn't understood, ARGP_ERR_UNKNOWN should be
213 returned. If a non-zero, non-ARGP_ERR_UNKNOWN value is returned, then
214 parsing is stopped immediately, and that value is returned from
215 argp_parse(). For special (non-user-supplied) values of KEY, see the
216 ARGP_KEY_ definitions below. */
217 argp_parser_t parser;
219 /* A string describing what other arguments are wanted by this program. It
220 is only used by argp_usage to print the `Usage:' message. If it
221 contains newlines, the strings separated by them are considered
222 alternative usage patterns, and printed on separate lines (lines after
223 the first are prefix by ` or: ' instead of `Usage:'). */
224 __const char *args_doc;
226 /* If non-NULL, a string containing extra text to be printed before and
227 after the options in a long help message (separated by a vertical tab
228 `\v' character). */
229 __const char *doc;
231 /* A vector of argp_children structures, terminated by a member with a 0
232 argp field, pointing to child argps should be parsed with this one. Any
233 conflicts are resolved in favor of this argp, or early argps in the
234 CHILDREN list. This field is useful if you use libraries that supply
235 their own argp structure, which you want to use in conjunction with your
236 own. */
237 __const struct argp_child *children;
239 /* If non-zero, this should be a function to filter the output of help
240 messages. KEY is either a key from an option, in which case TEXT is
241 that option's help text, or a special key from the ARGP_KEY_HELP_
242 defines, below, describing which other help text TEXT is. The function
243 should return either TEXT, if it should be used as-is, a replacement
244 string, which should be malloced, and will be freed by argp, or NULL,
245 meaning `print nothing'. The value for TEXT is *after* any translation
246 has been done, so if any of the replacement text also needs translation,
247 that should be done by the filter function. INPUT is either the input
248 supplied to argp_parse, or NULL, if argp_help was called directly. */
249 char *(*help_filter) (int __key, __const char *__text, void *__input);
251 /* If non-zero the strings used in the argp library are translated using
252 the domain described by this string. Otherwise the currently installed
253 default domain is used. */
254 const char *argp_domain;
257 /* Possible KEY arguments to a help filter function. */
258 #define ARGP_KEY_HELP_PRE_DOC 0x2000001 /* Help text preceeding options. */
259 #define ARGP_KEY_HELP_POST_DOC 0x2000002 /* Help text following options. */
260 #define ARGP_KEY_HELP_HEADER 0x2000003 /* Option header string. */
261 #define ARGP_KEY_HELP_EXTRA 0x2000004 /* After all other documentation;
262 TEXT is NULL for this key. */
263 /* Explanatory note emitted when duplicate option arguments have been
264 suppressed. */
265 #define ARGP_KEY_HELP_DUP_ARGS_NOTE 0x2000005
266 #define ARGP_KEY_HELP_ARGS_DOC 0x2000006 /* Argument doc string. */
268 /* When an argp has a non-zero CHILDREN field, it should point to a vector of
269 argp_child structures, each of which describes a subsidiary argp. */
270 struct argp_child
272 /* The child parser. */
273 __const struct argp *argp;
275 /* Flags for this child. */
276 int flags;
278 /* If non-zero, an optional header to be printed in help output before the
279 child options. As a side-effect, a non-zero value forces the child
280 options to be grouped together; to achieve this effect without actually
281 printing a header string, use a value of "". */
282 __const char *header;
284 /* Where to group the child options relative to the other (`consolidated')
285 options in the parent argp; the values are the same as the GROUP field
286 in argp_option structs, but all child-groupings follow parent options at
287 a particular group level. If both this field and HEADER are zero, then
288 they aren't grouped at all, but rather merged with the parent options
289 (merging the child's grouping levels with the parents). */
290 int group;
293 /* Parsing state. This is provided to parsing functions called by argp,
294 which may examine and, as noted, modify fields. */
295 struct argp_state
297 /* The top level ARGP being parsed. */
298 __const struct argp *root_argp;
300 /* The argument vector being parsed. May be modified. */
301 int argc;
302 char **argv;
304 /* The index in ARGV of the next arg that to be parsed. May be modified. */
305 int next;
307 /* The flags supplied to argp_parse. May be modified. */
308 unsigned flags;
310 /* While calling a parsing function with a key of ARGP_KEY_ARG, this is the
311 number of the current arg, starting at zero, and incremented after each
312 such call returns. At all other times, this is the number of such
313 arguments that have been processed. */
314 unsigned arg_num;
316 /* If non-zero, the index in ARGV of the first argument following a special
317 `--' argument (which prevents anything following being interpreted as an
318 option). Only set once argument parsing has proceeded past this point. */
319 int quoted;
321 /* An arbitrary pointer passed in from the user. */
322 void *input;
323 /* Values to pass to child parsers. This vector will be the same length as
324 the number of children for the current parser. */
325 void **child_inputs;
327 /* For the parser's use. Initialized to 0. */
328 void *hook;
330 /* The name used when printing messages. This is initialized to ARGV[0],
331 or PROGRAM_INVOCATION_NAME if that is unavailable. */
332 char *name;
334 /* Streams used when argp prints something. */
335 FILE *err_stream; /* For errors; initialized to stderr. */
336 FILE *out_stream; /* For information; initialized to stdout. */
338 void *pstate; /* Private, for use by argp. */
341 /* Flags for argp_parse (note that the defaults are those that are
342 convenient for program command line parsing): */
344 /* Don't ignore the first element of ARGV. Normally (and always unless
345 ARGP_NO_ERRS is set) the first element of the argument vector is
346 skipped for option parsing purposes, as it corresponds to the program name
347 in a command line. */
348 #define ARGP_PARSE_ARGV0 0x01
350 /* Don't print error messages for unknown options to stderr; unless this flag
351 is set, ARGP_PARSE_ARGV0 is ignored, as ARGV[0] is used as the program
352 name in the error messages. This flag implies ARGP_NO_EXIT (on the
353 assumption that silent exiting upon errors is bad behaviour). */
354 #define ARGP_NO_ERRS 0x02
356 /* Don't parse any non-option args. Normally non-option args are parsed by
357 calling the parse functions with a key of ARGP_KEY_ARG, and the actual arg
358 as the value. Since it's impossible to know which parse function wants to
359 handle it, each one is called in turn, until one returns 0 or an error
360 other than ARGP_ERR_UNKNOWN; if an argument is handled by no one, the
361 argp_parse returns prematurely (but with a return value of 0). If all
362 args have been parsed without error, all parsing functions are called one
363 last time with a key of ARGP_KEY_END. This flag needn't normally be set,
364 as the normal behavior is to stop parsing as soon as some argument can't
365 be handled. */
366 #define ARGP_NO_ARGS 0x04
368 /* Parse options and arguments in the same order they occur on the command
369 line -- normally they're rearranged so that all options come first. */
370 #define ARGP_IN_ORDER 0x08
372 /* Don't provide the standard long option --help, which causes usage and
373 option help information to be output to stdout, and exit (0) called. */
374 #define ARGP_NO_HELP 0x10
376 /* Don't exit on errors (they may still result in error messages). */
377 #define ARGP_NO_EXIT 0x20
379 /* Use the gnu getopt `long-only' rules for parsing arguments. */
380 #define ARGP_LONG_ONLY 0x40
382 /* Turns off any message-printing/exiting options. */
383 #define ARGP_SILENT (ARGP_NO_EXIT | ARGP_NO_ERRS | ARGP_NO_HELP)
385 /* Parse the options strings in ARGC & ARGV according to the options in ARGP.
386 FLAGS is one of the ARGP_ flags above. If ARG_INDEX is non-NULL, the
387 index in ARGV of the first unparsed option is returned in it. If an
388 unknown option is present, ARGP_ERR_UNKNOWN is returned; if some parser
389 routine returned a non-zero value, it is returned; otherwise 0 is
390 returned. This function may also call exit unless the ARGP_NO_HELP flag
391 is set. INPUT is a pointer to a value to be passed in to the parser. */
392 extern error_t argp_parse (__const struct argp *__restrict __argp,
393 int __argc, char **__restrict __argv,
394 unsigned __flags, int *__restrict __arg_index,
395 void *__restrict __input) __THROW;
396 extern error_t __argp_parse (__const struct argp *__restrict __argp,
397 int __argc, char **__restrict __argv,
398 unsigned __flags, int *__restrict __arg_index,
399 void *__restrict __input) __THROW;
401 /* Global variables. */
403 /* If defined or set by the user program to a non-zero value, then a default
404 option --version is added (unless the ARGP_NO_HELP flag is used), which
405 will print this string followed by a newline and exit (unless the
406 ARGP_NO_EXIT flag is used). Overridden by ARGP_PROGRAM_VERSION_HOOK. */
407 extern __const char *argp_program_version;
409 /* If defined or set by the user program to a non-zero value, then a default
410 option --version is added (unless the ARGP_NO_HELP flag is used), which
411 calls this function with a stream to print the version to and a pointer to
412 the current parsing state, and then exits (unless the ARGP_NO_EXIT flag is
413 used). This variable takes precedent over ARGP_PROGRAM_VERSION. */
414 extern void (*argp_program_version_hook) (FILE *__restrict __stream,
415 struct argp_state *__restrict
416 __state);
418 /* If defined or set by the user program, it should point to string that is
419 the bug-reporting address for the program. It will be printed by
420 argp_help if the ARGP_HELP_BUG_ADDR flag is set (as it is by various
421 standard help messages), embedded in a sentence that says something like
422 `Report bugs to ADDR.'. */
423 extern __const char *argp_program_bug_address;
425 /* The exit status that argp will use when exiting due to a parsing error.
426 If not defined or set by the user program, this defaults to EX_USAGE from
427 <sysexits.h>. */
428 extern error_t argp_err_exit_status;
430 /* Flags for argp_help. */
431 #define ARGP_HELP_USAGE 0x01 /* a Usage: message. */
432 #define ARGP_HELP_SHORT_USAGE 0x02 /* " but don't actually print options. */
433 #define ARGP_HELP_SEE 0x04 /* a `Try ... for more help' message. */
434 #define ARGP_HELP_LONG 0x08 /* a long help message. */
435 #define ARGP_HELP_PRE_DOC 0x10 /* doc string preceding long help. */
436 #define ARGP_HELP_POST_DOC 0x20 /* doc string following long help. */
437 #define ARGP_HELP_DOC (ARGP_HELP_PRE_DOC | ARGP_HELP_POST_DOC)
438 #define ARGP_HELP_BUG_ADDR 0x40 /* bug report address */
439 #define ARGP_HELP_LONG_ONLY 0x80 /* modify output appropriately to
440 reflect ARGP_LONG_ONLY mode. */
442 /* These ARGP_HELP flags are only understood by argp_state_help. */
443 #define ARGP_HELP_EXIT_ERR 0x100 /* Call exit(1) instead of returning. */
444 #define ARGP_HELP_EXIT_OK 0x200 /* Call exit(0) instead of returning. */
446 /* The standard thing to do after a program command line parsing error, if an
447 error message has already been printed. */
448 #define ARGP_HELP_STD_ERR \
449 (ARGP_HELP_SEE | ARGP_HELP_EXIT_ERR)
450 /* The standard thing to do after a program command line parsing error, if no
451 more specific error message has been printed. */
452 #define ARGP_HELP_STD_USAGE \
453 (ARGP_HELP_SHORT_USAGE | ARGP_HELP_SEE | ARGP_HELP_EXIT_ERR)
454 /* The standard thing to do in response to a --help option. */
455 #define ARGP_HELP_STD_HELP \
456 (ARGP_HELP_SHORT_USAGE | ARGP_HELP_LONG | ARGP_HELP_EXIT_OK \
457 | ARGP_HELP_DOC | ARGP_HELP_BUG_ADDR)
459 /* Output a usage message for ARGP to STREAM. FLAGS are from the set
460 ARGP_HELP_*. */
461 extern void argp_help (__const struct argp *__restrict __argp,
462 FILE *__restrict __stream,
463 unsigned __flags, char *__restrict __name) __THROW;
464 extern void __argp_help (__const struct argp *__restrict __argp,
465 FILE *__restrict __stream, unsigned __flags,
466 char *__name) __THROW;
468 /* The following routines are intended to be called from within an argp
469 parsing routine (thus taking an argp_state structure as the first
470 argument). They may or may not print an error message and exit, depending
471 on the flags in STATE -- in any case, the caller should be prepared for
472 them *not* to exit, and should return an appropiate error after calling
473 them. [argp_usage & argp_error should probably be called argp_state_...,
474 but they're used often enough that they should be short] */
476 /* Output, if appropriate, a usage message for STATE to STREAM. FLAGS are
477 from the set ARGP_HELP_*. */
478 extern void argp_state_help (__const struct argp_state *__restrict __state,
479 FILE *__restrict __stream,
480 unsigned int __flags) __THROW;
481 extern void __argp_state_help (__const struct argp_state *__restrict __state,
482 FILE *__restrict __stream,
483 unsigned int __flags) __THROW;
485 /* Possibly output the standard usage message for ARGP to stderr and exit. */
486 extern void argp_usage (__const struct argp_state *__state) __THROW;
487 extern void __argp_usage (__const struct argp_state *__state) __THROW;
489 /* If appropriate, print the printf string FMT and following args, preceded
490 by the program name and `:', to stderr, and followed by a `Try ... --help'
491 message, then exit (1). */
492 extern void argp_error (__const struct argp_state *__restrict __state,
493 __const char *__restrict __fmt, ...) __THROW
494 __attribute__ ((__format__ (__printf__, 2, 3)));
495 extern void __argp_error (__const struct argp_state *__restrict __state,
496 __const char *__restrict __fmt, ...) __THROW
497 __attribute__ ((__format__ (__printf__, 2, 3)));
499 /* Similar to the standard gnu error-reporting function error(), but will
500 respect the ARGP_NO_EXIT and ARGP_NO_ERRS flags in STATE, and will print
501 to STATE->err_stream. This is useful for argument parsing code that is
502 shared between program startup (when exiting is desired) and runtime
503 option parsing (when typically an error code is returned instead). The
504 difference between this function and argp_error is that the latter is for
505 *parsing errors*, and the former is for other problems that occur during
506 parsing but don't reflect a (syntactic) problem with the input. */
507 extern void argp_failure (__const struct argp_state *__restrict __state,
508 int __status, int __errnum,
509 __const char *__restrict __fmt, ...) __THROW
510 __attribute__ ((__format__ (__printf__, 4, 5)));
511 extern void __argp_failure (__const struct argp_state *__restrict __state,
512 int __status, int __errnum,
513 __const char *__restrict __fmt, ...) __THROW
514 __attribute__ ((__format__ (__printf__, 4, 5)));
516 /* Returns true if the option OPT is a valid short option. */
517 extern int _option_is_short (__const struct argp_option *__opt) __THROW;
518 extern int __option_is_short (__const struct argp_option *__opt) __THROW;
520 /* Returns true if the option OPT is in fact the last (unused) entry in an
521 options array. */
522 extern int _option_is_end (__const struct argp_option *__opt) __THROW;
523 extern int __option_is_end (__const struct argp_option *__opt) __THROW;
525 /* Return the input field for ARGP in the parser corresponding to STATE; used
526 by the help routines. */
527 extern void *_argp_input (__const struct argp *__restrict __argp,
528 __const struct argp_state *__restrict __state)
529 __THROW;
530 extern void *__argp_input (__const struct argp *__restrict __argp,
531 __const struct argp_state *__restrict __state)
532 __THROW;
533 /* Used for extracting the program name from argv[0] */
534 extern char *_argp_basename(char *name) __THROW;
535 extern char *__argp_basename(char *name) __THROW;
537 /* Getting the program name given an argp state */
538 extern char *_argp_short_program_name(const struct argp_state *state) __THROW;
539 extern char *__argp_short_program_name(const struct argp_state *state) __THROW;
541 #ifdef __USE_EXTERN_INLINES
543 # if !_LIBC
544 # define __argp_usage argp_usage
545 # define __argp_state_help argp_state_help
546 # define __option_is_short _option_is_short
547 # define __option_is_end _option_is_end
548 # endif
550 # ifndef ARGP_EI
551 # define ARGP_EI extern __inline__
552 # endif
554 ARGP_EI void
555 __argp_usage (__const struct argp_state *__state) __THROW
557 __argp_state_help (__state, stderr, ARGP_HELP_STD_USAGE);
560 ARGP_EI int
561 __option_is_short (__const struct argp_option *__opt) __THROW
563 if (__opt->flags & OPTION_DOC)
564 return 0;
565 else
567 int __key = __opt->key;
568 return __key > 0 && isprint (__key);
572 ARGP_EI int
573 __option_is_end (__const struct argp_option *__opt) __THROW
575 return !__opt->key && !__opt->name && !__opt->doc && !__opt->group;
578 # if !_LIBC
579 # undef __argp_usage
580 # undef __argp_state_help
581 # undef __option_is_short
582 # undef __option_is_end
583 # endif
584 #endif /* Use extern inlines. */
586 #ifdef __cplusplus
588 #endif
590 #endif /* argp.h */