WvStreams
argp.h
1/* Hierarchial argument parsing.
2 Copyright (C) 1995, 96, 97, 98, 99, 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>.
5
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Library General Public License as
8 published by the Free Software Foundation; either version 2 of the
9 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 Library General Public License for more details.
15
16 You should have received a copy of the GNU Library General Public
17 License along with the GNU C Library; see the file COPYING.LIB. If not,
18 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
20
21#ifndef _ARGP_H
22#define _ARGP_H
23
24#include <stdio.h>
25#include <ctype.h>
26
27#define __need_error_t
28#include <errno.h>
29
30#ifndef __THROW
31# define __THROW
32#endif
33
34#ifndef __const
35# define __const const
36#endif
37
38#ifndef __error_t_defined
39typedef int error_t;
40# define __error_t_defined
41#endif
42
43/* FIXME: What's the right way to check for __restrict? Sun's cc seems
44 not to have it. Perhaps it's easiest to just delete the use of
45 __restrict from the prototypes. */
46#ifndef __restrict
47# ifndef __GNUC___
48# define __restrict
49# endif
50#endif
51
52/* NOTE: We can't use the autoconf tests, since this is supposed to be
53 an installed header file and argp's config.h is of course not
54 installed. */
55#ifndef PRINTF_STYLE
56# if __GNUC__ >= 2
57# define PRINTF_STYLE(f, a) __attribute__ ((__format__ (__printf__, f, a)))
58# else
59# define PRINTF_STYLE(f, a)
60# endif
61#endif
62
63
64#ifdef __cplusplus
65extern "C" {
66#endif
67
68/* A description of a particular option. A pointer to an array of
69 these is passed in the OPTIONS field of an argp structure. Each option
70 entry can correspond to one long option and/or one short option; more
71 names for the same option can be added by following an entry in an option
72 array with options having the OPTION_ALIAS flag set. */
74{
75 /* The long option name. For more than one name for the same option, you
76 can use following options with the OPTION_ALIAS flag set. */
77 __const char *name;
78
79 /* What key is returned for this option. If > 0 and printable, then it's
80 also accepted as a short option. */
81 int key;
82
83 /* If non-NULL, this is the name of the argument associated with this
84 option, which is required unless the OPTION_ARG_OPTIONAL flag is set. */
85 __const char *arg;
86
87 /* OPTION_ flags. */
88 int flags;
89
90 /* The doc string for this option. If both NAME and KEY are 0, This string
91 will be printed outdented from the normal option column, making it
92 useful as a group header (it will be the first thing printed in its
93 group); in this usage, it's conventional to end the string with a `:'. */
94 __const char *doc;
95
96 /* The group this option is in. In a long help message, options are sorted
97 alphabetically within each group, and the groups presented in the order
98 0, 1, 2, ..., n, -m, ..., -2, -1. Every entry in an options array with
99 if this field 0 will inherit the group number of the previous entry, or
100 zero if it's the first one, unless its a group header (NAME and KEY both
101 0), in which case, the previous entry + 1 is the default. Automagic
102 options such as --help are put into group -1. */
103 int group;
104};
105
106/* The argument associated with this option is optional. */
107#define OPTION_ARG_OPTIONAL 0x1
108
109/* This option isn't displayed in any help messages. */
110#define OPTION_HIDDEN 0x2
111
112/* This option is an alias for the closest previous non-alias option. This
113 means that it will be displayed in the same help entry, and will inherit
114 fields other than NAME and KEY from the aliased option. */
115#define OPTION_ALIAS 0x4
116
117/* This option isn't actually an option (and so should be ignored by the
118 actual option parser), but rather an arbitrary piece of documentation that
119 should be displayed in much the same manner as the options. If this flag
120 is set, then the option NAME field is displayed unmodified (e.g., no `--'
121 prefix is added) at the left-margin (where a *short* option would normally
122 be displayed), and the documentation string in the normal place. For
123 purposes of sorting, any leading whitespace and puncuation is ignored,
124 except that if the first non-whitespace character is not `-', this entry
125 is displayed after all options (and OPTION_DOC entries with a leading `-')
126 in the same group. */
127#define OPTION_DOC 0x8
128
129/* This option shouldn't be included in `long' usage messages (but is still
130 included in help messages). This is mainly intended for options that are
131 completely documented in an argp's ARGS_DOC field, in which case including
132 the option in the generic usage list would be redundant. For instance,
133 if ARGS_DOC is "FOO BAR\n-x BLAH", and the `-x' option's purpose is to
134 distinguish these two cases, -x should probably be marked
135 OPTION_NO_USAGE. */
136#define OPTION_NO_USAGE 0x10
137
138struct argp; /* fwd declare this type */
139struct argp_state; /* " */
140struct argp_child; /* " */
141
142/* The type of a pointer to an argp parsing function. */
143typedef error_t (*argp_parser_t) (int key, char *arg,
144 struct argp_state *state);
145
146/* What to return for unrecognized keys. For special ARGP_KEY_ keys, such
147 returns will simply be ignored. For user keys, this error will be turned
148 into EINVAL (if the call to argp_parse is such that errors are propagated
149 back to the user instead of exiting); returning EINVAL itself would result
150 in an immediate stop to parsing in *all* cases. */
151#define ARGP_ERR_UNKNOWN E2BIG /* Hurd should never need E2BIG. XXX */
152
153/* Special values for the KEY argument to an argument parsing function.
154 ARGP_ERR_UNKNOWN should be returned if they aren't understood.
155
156 The sequence of keys to a parsing function is either (where each
157 uppercased word should be prefixed by `ARGP_KEY_' and opt is a user key):
158
159 INIT opt... NO_ARGS END SUCCESS -- No non-option arguments at all
160 or INIT (opt | ARG)... END SUCCESS -- All non-option args parsed
161 or INIT (opt | ARG)... SUCCESS -- Some non-option arg unrecognized
162
163 The third case is where every parser returned ARGP_KEY_UNKNOWN for an
164 argument, in which case parsing stops at that argument (returning the
165 unparsed arguments to the caller of argp_parse if requested, or stopping
166 with an error message if not).
167
168 If an error occurs (either detected by argp, or because the parsing
169 function returned an error value), then the parser is called with
170 ARGP_KEY_ERROR, and no further calls are made. */
171
172/* This is not an option at all, but rather a command line argument. If a
173 parser receiving this key returns success, the fact is recorded, and the
174 ARGP_KEY_NO_ARGS case won't be used. HOWEVER, if while processing the
175 argument, a parser function decrements the NEXT field of the state it's
176 passed, the option won't be considered processed; this is to allow you to
177 actually modify the argument (perhaps into an option), and have it
178 processed again. */
179#define ARGP_KEY_ARG 0
180/* There are remaining arguments not parsed by any parser, which may be found
181 starting at (STATE->argv + STATE->next). If success is returned, but
182 STATE->next left untouched, it's assumed that all arguments were consume,
183 otherwise, the parser should adjust STATE->next to reflect any arguments
184 consumed. */
185#define ARGP_KEY_ARGS 0x1000006
186/* There are no more command line arguments at all. */
187#define ARGP_KEY_END 0x1000001
188/* Because it's common to want to do some special processing if there aren't
189 any non-option args, user parsers are called with this key if they didn't
190 successfully process any non-option arguments. Called just before
191 ARGP_KEY_END (where more general validity checks on previously parsed
192 arguments can take place). */
193#define ARGP_KEY_NO_ARGS 0x1000002
194/* Passed in before any parsing is done. Afterwards, the values of each
195 element of the CHILD_INPUT field, if any, in the state structure is
196 copied to each child's state to be the initial value of the INPUT field. */
197#define ARGP_KEY_INIT 0x1000003
198/* Use after all other keys, including SUCCESS & END. */
199#define ARGP_KEY_FINI 0x1000007
200/* Passed in when parsing has successfully been completed (even if there are
201 still arguments remaining). */
202#define ARGP_KEY_SUCCESS 0x1000004
203/* Passed in if an error occurs. */
204#define ARGP_KEY_ERROR 0x1000005
205
206/* An argp structure contains a set of options declarations, a function to
207 deal with parsing one, documentation string, a possible vector of child
208 argp's, and perhaps a function to filter help output. When actually
209 parsing options, getopt is called with the union of all the argp
210 structures chained together through their CHILD pointers, with conflicts
211 being resolved in favor of the first occurrence in the chain. */
212struct argp
213{
214 /* An array of argp_option structures, terminated by an entry with both
215 NAME and KEY having a value of 0. */
216 __const struct argp_option *options;
217
218 /* What to do with an option from this structure. KEY is the key
219 associated with the option, and ARG is any associated argument (NULL if
220 none was supplied). If KEY isn't understood, ARGP_ERR_UNKNOWN should be
221 returned. If a non-zero, non-ARGP_ERR_UNKNOWN value is returned, then
222 parsing is stopped immediately, and that value is returned from
223 argp_parse(). For special (non-user-supplied) values of KEY, see the
224 ARGP_KEY_ definitions below. */
225 argp_parser_t parser;
226
227 /* A string describing what other arguments are wanted by this program. It
228 is only used by argp_usage to print the `Usage:' message. If it
229 contains newlines, the strings separated by them are considered
230 alternative usage patterns, and printed on separate lines (lines after
231 the first are prefix by ` or: ' instead of `Usage:'). */
232 __const char *args_doc;
233
234 /* If non-NULL, a string containing extra text to be printed before and
235 after the options in a long help message (separated by a vertical tab
236 `\v' character). */
237 __const char *doc;
238
239 /* A vector of argp_children structures, terminated by a member with a 0
240 argp field, pointing to child argps should be parsed with this one. Any
241 conflicts are resolved in favor of this argp, or early argps in the
242 CHILDREN list. This field is useful if you use libraries that supply
243 their own argp structure, which you want to use in conjunction with your
244 own. */
245 __const struct argp_child *children;
246
247 /* If non-zero, this should be a function to filter the output of help
248 messages. KEY is either a key from an option, in which case TEXT is
249 that option's help text, or a special key from the ARGP_KEY_HELP_
250 defines, below, describing which other help text TEXT is. The function
251 should return either TEXT, if it should be used as-is, a replacement
252 string, which should be malloced, and will be freed by argp, or NULL,
253 meaning `print nothing'. The value for TEXT is *after* any translation
254 has been done, so if any of the replacement text also needs translation,
255 that should be done by the filter function. INPUT is either the input
256 supplied to argp_parse, or NULL, if argp_help was called directly. */
257 char *(*help_filter) (int __key, __const char *__text, void *__input);
258
259 /* If non-zero the strings used in the argp library are translated using
260 the domain described by this string. Otherwise the currently installed
261 default domain is used. */
262 const char *argp_domain;
263};
264
265/* Possible KEY arguments to a help filter function. */
266#define ARGP_KEY_HELP_PRE_DOC 0x2000001 /* Help text preceeding options. */
267#define ARGP_KEY_HELP_POST_DOC 0x2000002 /* Help text following options. */
268#define ARGP_KEY_HELP_HEADER 0x2000003 /* Option header string. */
269#define ARGP_KEY_HELP_EXTRA 0x2000004 /* After all other documentation;
270 TEXT is NULL for this key. */
271/* Explanatory note emitted when duplicate option arguments have been
272 suppressed. */
273#define ARGP_KEY_HELP_DUP_ARGS_NOTE 0x2000005
274#define ARGP_KEY_HELP_ARGS_DOC 0x2000006 /* Argument doc string. */
275
276/* When an argp has a non-zero CHILDREN field, it should point to a vector of
277 argp_child structures, each of which describes a subsidiary argp. */
278struct argp_child
279{
280 /* The child parser. */
281 __const struct argp *argp;
282
283 /* Flags for this child. */
284 int flags;
285
286 /* If non-zero, an optional header to be printed in help output before the
287 child options. As a side-effect, a non-zero value forces the child
288 options to be grouped together; to achieve this effect without actually
289 printing a header string, use a value of "". */
290 __const char *header;
291
292 /* Where to group the child options relative to the other (`consolidated')
293 options in the parent argp; the values are the same as the GROUP field
294 in argp_option structs, but all child-groupings follow parent options at
295 a particular group level. If both this field and HEADER are zero, then
296 they aren't grouped at all, but rather merged with the parent options
297 (merging the child's grouping levels with the parents). */
298 int group;
299};
300
301/* Parsing state. This is provided to parsing functions called by argp,
302 which may examine and, as noted, modify fields. */
303struct argp_state
304{
305 /* The top level ARGP being parsed. */
306 __const struct argp *root_argp;
307
308 /* The argument vector being parsed. May be modified. */
309 int argc;
310 char **argv;
311
312 /* The index in ARGV of the next arg that to be parsed. May be modified. */
313 int next;
314
315 /* The flags supplied to argp_parse. May be modified. */
316 unsigned flags;
317
318 /* While calling a parsing function with a key of ARGP_KEY_ARG, this is the
319 number of the current arg, starting at zero, and incremented after each
320 such call returns. At all other times, this is the number of such
321 arguments that have been processed. */
322 unsigned arg_num;
323
324 /* If non-zero, the index in ARGV of the first argument following a special
325 `--' argument (which prevents anything following being interpreted as an
326 option). Only set once argument parsing has proceeded past this point. */
327 int quoted;
328
329 /* An arbitrary pointer passed in from the user. */
330 void *input;
331 /* Values to pass to child parsers. This vector will be the same length as
332 the number of children for the current parser. */
333 void **child_inputs;
334
335 /* For the parser's use. Initialized to 0. */
336 void *hook;
337
338 /* The name used when printing messages. This is initialized to ARGV[0],
339 or PROGRAM_INVOCATION_NAME if that is unavailable. */
340 char *name;
341
342 /* Streams used when argp prints something. */
343 FILE *err_stream; /* For errors; initialized to stderr. */
344 FILE *out_stream; /* For information; initialized to stdout. */
345
346 void *pstate; /* Private, for use by argp. */
347};
348
349/* Flags for argp_parse (note that the defaults are those that are
350 convenient for program command line parsing): */
351
352/* Don't ignore the first element of ARGV. Normally (and always unless
353 ARGP_NO_ERRS is set) the first element of the argument vector is
354 skipped for option parsing purposes, as it corresponds to the program name
355 in a command line. */
356#define ARGP_PARSE_ARGV0 0x01
357
358/* Don't print error messages for unknown options to stderr; unless this flag
359 is set, ARGP_PARSE_ARGV0 is ignored, as ARGV[0] is used as the program
360 name in the error messages. This flag implies ARGP_NO_EXIT (on the
361 assumption that silent exiting upon errors is bad behaviour). */
362#define ARGP_NO_ERRS 0x02
363
364/* Don't parse any non-option args. Normally non-option args are parsed by
365 calling the parse functions with a key of ARGP_KEY_ARG, and the actual arg
366 as the value. Since it's impossible to know which parse function wants to
367 handle it, each one is called in turn, until one returns 0 or an error
368 other than ARGP_ERR_UNKNOWN; if an argument is handled by no one, the
369 argp_parse returns prematurely (but with a return value of 0). If all
370 args have been parsed without error, all parsing functions are called one
371 last time with a key of ARGP_KEY_END. This flag needn't normally be set,
372 as the normal behavior is to stop parsing as soon as some argument can't
373 be handled. */
374#define ARGP_NO_ARGS 0x04
375
376/* Parse options and arguments in the same order they occur on the command
377 line -- normally they're rearranged so that all options come first. */
378#define ARGP_IN_ORDER 0x08
379
380/* Don't provide the standard long option --help, which causes usage and
381 option help information to be output to stdout, and exit (0) called. */
382#define ARGP_NO_HELP 0x10
383
384/* Don't exit on errors (they may still result in error messages). */
385#define ARGP_NO_EXIT 0x20
386
387/* Use the gnu getopt `long-only' rules for parsing arguments. */
388#define ARGP_LONG_ONLY 0x40
389
390/* Turns off any message-printing/exiting options. */
391#define ARGP_SILENT (ARGP_NO_EXIT | ARGP_NO_ERRS | ARGP_NO_HELP)
392
393/* Parse the options strings in ARGC & ARGV according to the options in ARGP.
394 FLAGS is one of the ARGP_ flags above. If ARG_INDEX is non-NULL, the
395 index in ARGV of the first unparsed option is returned in it. If an
396 unknown option is present, ARGP_ERR_UNKNOWN is returned; if some parser
397 routine returned a non-zero value, it is returned; otherwise 0 is
398 returned. This function may also call exit unless the ARGP_NO_HELP flag
399 is set. INPUT is a pointer to a value to be passed in to the parser. */
400extern error_t argp_parse (__const struct argp *__restrict __argp,
401 int /*argc*/, char **__restrict /*argv*/,
402 unsigned __flags, int *__restrict __arg_index,
403 void *__restrict __input) __THROW;
404extern error_t __argp_parse (__const struct argp *__restrict __argp,
405 int /*argc*/, char **__restrict /*argv*/,
406 unsigned __flags, int *__restrict __arg_index,
407 void *__restrict __input) __THROW;
408
409/* Global variables. */
410
411/* If defined or set by the user program to a non-zero value, then a default
412 option --version is added (unless the ARGP_NO_HELP flag is used), which
413 will print this string followed by a newline and exit (unless the
414 ARGP_NO_EXIT flag is used). Overridden by ARGP_PROGRAM_VERSION_HOOK. */
415extern __const char *argp_program_version;
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 calls this function with a stream to print the version to and a pointer to
420 the current parsing state, and then exits (unless the ARGP_NO_EXIT flag is
421 used). This variable takes precedent over ARGP_PROGRAM_VERSION. */
422extern void (*argp_program_version_hook) (FILE *__restrict __stream,
423 struct argp_state *__restrict
424 __state);
425
426/* If defined or set by the user program, it should point to string that is
427 the bug-reporting address for the program. It will be printed by
428 argp_help if the ARGP_HELP_BUG_ADDR flag is set (as it is by various
429 standard help messages), embedded in a sentence that says something like
430 `Report bugs to ADDR.'. */
431extern __const char *argp_program_bug_address;
432
433/* The exit status that argp will use when exiting due to a parsing error.
434 If not defined or set by the user program, this defaults to EX_USAGE from
435 <sysexits.h>. */
436extern error_t argp_err_exit_status;
437
438/* Flags for argp_help. */
439#define ARGP_HELP_USAGE 0x01 /* a Usage: message. */
440#define ARGP_HELP_SHORT_USAGE 0x02 /* " but don't actually print options. */
441#define ARGP_HELP_SEE 0x04 /* a `Try ... for more help' message. */
442#define ARGP_HELP_LONG 0x08 /* a long help message. */
443#define ARGP_HELP_PRE_DOC 0x10 /* doc string preceding long help. */
444#define ARGP_HELP_POST_DOC 0x20 /* doc string following long help. */
445#define ARGP_HELP_DOC (ARGP_HELP_PRE_DOC | ARGP_HELP_POST_DOC)
446#define ARGP_HELP_BUG_ADDR 0x40 /* bug report address */
447#define ARGP_HELP_LONG_ONLY 0x80 /* modify output appropriately to
448 reflect ARGP_LONG_ONLY mode. */
449
450/* These ARGP_HELP flags are only understood by argp_state_help. */
451#define ARGP_HELP_EXIT_ERR 0x100 /* Call exit(1) instead of returning. */
452#define ARGP_HELP_EXIT_OK 0x200 /* Call exit(0) instead of returning. */
453
454/* The standard thing to do after a program command line parsing error, if an
455 error message has already been printed. */
456#define ARGP_HELP_STD_ERR \
457 (ARGP_HELP_SEE | ARGP_HELP_EXIT_ERR)
458/* The standard thing to do after a program command line parsing error, if no
459 more specific error message has been printed. */
460#define ARGP_HELP_STD_USAGE \
461 (ARGP_HELP_SHORT_USAGE | ARGP_HELP_SEE | ARGP_HELP_EXIT_ERR)
462/* The standard thing to do in response to a --help option. */
463#define ARGP_HELP_STD_HELP \
464 (ARGP_HELP_SHORT_USAGE | ARGP_HELP_LONG | ARGP_HELP_EXIT_OK \
465 | ARGP_HELP_DOC | ARGP_HELP_BUG_ADDR)
466
467/* Output a usage message for ARGP to STREAM. FLAGS are from the set
468 ARGP_HELP_*. */
469extern void argp_help (__const struct argp *__restrict __argp,
470 FILE *__restrict __stream,
471 unsigned __flags, char *__restrict __name) __THROW;
472extern void __argp_help (__const struct argp *__restrict __argp,
473 FILE *__restrict __stream, unsigned __flags,
474 char *__name) __THROW;
475
476/* The following routines are intended to be called from within an argp
477 parsing routine (thus taking an argp_state structure as the first
478 argument). They may or may not print an error message and exit, depending
479 on the flags in STATE -- in any case, the caller should be prepared for
480 them *not* to exit, and should return an appropiate error after calling
481 them. [argp_usage & argp_error should probably be called argp_state_...,
482 but they're used often enough that they should be short] */
483
484/* Output, if appropriate, a usage message for STATE to STREAM. FLAGS are
485 from the set ARGP_HELP_*. */
486extern void argp_state_help (__const struct argp_state *__restrict __state,
487 FILE *__restrict __stream,
488 unsigned int __flags) __THROW;
489extern void __argp_state_help (__const struct argp_state *__restrict __state,
490 FILE *__restrict __stream,
491 unsigned int __flags) __THROW;
492
493/* Possibly output the standard usage message for ARGP to stderr and exit. */
494extern void argp_usage (__const struct argp_state *__state) __THROW;
495extern void __argp_usage (__const struct argp_state *__state) __THROW;
496
497/* If appropriate, print the printf string FMT and following args, preceded
498 by the program name and `:', to stderr, and followed by a `Try ... --help'
499 message, then exit (1). */
500extern void argp_error (__const struct argp_state *__restrict __state,
501 __const char *__restrict __fmt, ...) __THROW
502 PRINTF_STYLE(2,3);
503extern void __argp_error (__const struct argp_state *__restrict __state,
504 __const char *__restrict __fmt, ...) __THROW
505 PRINTF_STYLE(2,3);
506
507/* Similar to the standard gnu error-reporting function error(), but will
508 respect the ARGP_NO_EXIT and ARGP_NO_ERRS flags in STATE, and will print
509 to STATE->err_stream. This is useful for argument parsing code that is
510 shared between program startup (when exiting is desired) and runtime
511 option parsing (when typically an error code is returned instead). The
512 difference between this function and argp_error is that the latter is for
513 *parsing errors*, and the former is for other problems that occur during
514 parsing but don't reflect a (syntactic) problem with the input. */
515extern void argp_failure (__const struct argp_state *__restrict __state,
516 int __status, int __errnum,
517 __const char *__restrict __fmt, ...) __THROW
518 PRINTF_STYLE(4,5);
519extern void __argp_failure (__const struct argp_state *__restrict __state,
520 int __status, int __errnum,
521 __const char *__restrict __fmt, ...) __THROW
522 PRINTF_STYLE(4,5);
523
524/* Returns true if the option OPT is a valid short option. */
525extern int _option_is_short (__const struct argp_option *__opt) __THROW;
526extern int __option_is_short (__const struct argp_option *__opt) __THROW;
527
528/* Returns true if the option OPT is in fact the last (unused) entry in an
529 options array. */
530extern int _option_is_end (__const struct argp_option *__opt) __THROW;
531extern int __option_is_end (__const struct argp_option *__opt) __THROW;
532
533/* Return the input field for ARGP in the parser corresponding to STATE; used
534 by the help routines. */
535extern void *_argp_input (__const struct argp *__restrict __argp,
536 __const struct argp_state *__restrict __state)
537 __THROW;
538extern void *__argp_input (__const struct argp *__restrict __argp,
539 __const struct argp_state *__restrict __state)
540 __THROW;
541
542/* Used for extracting the program name from argv[0] */
543extern char *_argp_basename(char *name) __THROW;
544extern char *__argp_basename(char *name) __THROW;
545
546/* Getting the program name given an argp state */
547extern char *
548_argp_short_program_name(const struct argp_state *state) __THROW;
549extern char *
550__argp_short_program_name(const struct argp_state *state) __THROW;
551
552
553#ifdef __USE_EXTERN_INLINES
554
555# if !_LIBC
556# define __argp_usage argp_usage
557# define __argp_state_help argp_state_help
558# define __option_is_short _option_is_short
559# define __option_is_end _option_is_end
560# endif
561
562# ifndef ARGP_EI
563# define ARGP_EI extern __inline__
564# endif
565
566ARGP_EI void
567__argp_usage (__const struct argp_state *__state)
568{
569 __argp_state_help (__state, stderr, ARGP_HELP_STD_USAGE);
570}
571
572ARGP_EI int
573__option_is_short (__const struct argp_option *__opt)
574{
575 if (__opt->flags & OPTION_DOC)
576 return 0;
577 else
578 {
579 int __key = __opt->key;
580 return __key > 0 && isprint (__key);
581 }
582}
583
584ARGP_EI int
585__option_is_end (__const struct argp_option *__opt)
586{
587 return !__opt->key && !__opt->name && !__opt->doc && !__opt->group;
588}
589
590# if !_LIBC
591# undef __argp_usage
592# undef __argp_state_help
593# undef __option_is_short
594# undef __option_is_end
595# endif
596#endif /* Use extern inlines. */
597
598#ifdef __cplusplus
599}
600#endif
601
602#endif /* argp.h */
Definition argp.h:213