1 /* Hierarchial argument parsing, layered over getopt.
2 Copyright (C) 1995-1999, 2003, 2004, 2005, 2006, 2007, 2009
3 Free Software Foundation, Inc.
4 This file is part of the GNU C Library.
5 Written by Miles Bader <miles at gnu.ai.mit.edu>.
6
7 The GNU C Library is free software; you can redistribute it and/or
8 modify it under the terms of the GNU Lesser General Public
9 License as published by the Free Software Foundation; either
10 version 2.1 of the License, or (at your option) any later version.
11
12 The GNU C Library is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 Lesser General Public License for more details.
16
17 You should have received a copy of the GNU Lesser General Public
18 License along with the GNU C Library; see the file COPYING.LIB. If
19 not, see <http://www.gnu.org/licenses/>.
20
21 Modified for uClibc by: Salvatore Cro <salvatore.cro at st.com>
22 */
23
24 #ifndef _ARGP_H
25 #define _ARGP_H
26
27 #include <stdio.h>
28 #include <ctype.h>
29 #include <limits.h>
30
31 #define __need_error_t
32 #include <errno.h>
33
34 #ifndef __const
35 # define __const const
36 #endif
37
38 #ifndef __THROW
39 # define __THROW
40 #endif
41 #ifndef __NTH
42 # define __NTH(fct) fct __THROW
43 #endif
44
45 #ifndef __attribute__
46 /* This feature is available in gcc versions 2.5 and later. */
47 # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || defined(__STRICT_ANSI__)
48 # define __attribute__(Spec) /* empty */
49 # define __UCLIBC_ATTRIBUTE_FALLBACK__
50 # endif
51 /* The __-protected variants of `format' and `printf' attributes
52 are accepted by gcc versions 2.6.4 (effectively 2.7) and later. */
53 # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7) || defined(__STRICT_ANSI__)
54 # define __format__ format
55 # define __printf__ printf
56 # define __UCLIBC_PRINTF_FALLBACK__
57 # endif
58 #endif
59
60 /* GCC 2.95 and later have "__restrict"; C99 compilers have
61 "restrict", and "configure" may have defined "restrict". */
62 #ifndef __restrict
63 # if ! (2 < __GNUC__ || (2 == __GNUC__ && 95 <= __GNUC_MINOR__))
64 # if defined restrict || 199901L <= __STDC_VERSION__
65 # define __restrict restrict
66 # else
67 # define __restrict
68 # endif
69 # endif
70 #endif
71
72 #ifndef __error_t_defined
73 typedef int error_t;
74 # define __error_t_defined
75 #endif
76
77 #ifdef __cplusplus
78 extern "C" {
79 #endif
80
81 /* A description of a particular option. A pointer to an array of
82 these is passed in the OPTIONS field of an argp structure. Each option
83 entry can correspond to one long option and/or one short option; more
84 names for the same option can be added by following an entry in an option
85 array with options having the OPTION_ALIAS flag set. */
86 struct argp_option
87 {
88 /* The long option name. For more than one name for the same option, you
89 can use following options with the OPTION_ALIAS flag set. */
90 __const char *name;
91
92 /* What key is returned for this option. If > 0 and printable, then it's
93 also accepted as a short option. */
94 int key;
95
96 /* If non-NULL, this is the name of the argument associated with this
97 option, which is required unless the OPTION_ARG_OPTIONAL flag is set. */
98 __const char *arg;
99
100 /* OPTION_ flags. */
101 int flags;
102
103 /* The doc string for this option. If both NAME and KEY are 0, This string
104 will be printed outdented from the normal option column, making it
105 useful as a group header (it will be the first thing printed in its
106 group); in this usage, it's conventional to end the string with a `:'. */
107 __const char *doc;
108
109 /* The group this option is in. In a long help message, options are sorted
110 alphabetically within each group, and the groups presented in the order
111 0, 1, 2, ..., n, -m, ..., -2, -1. Every entry in an options array with
112 if this field 0 will inherit the group number of the previous entry, or
113 zero if it's the first one, unless its a group header (NAME and KEY both
114 0), in which case, the previous entry + 1 is the default. Automagic
115 options such as --help are put into group -1. */
116 int group;
117 };
118
119 /* The argument associated with this option is optional. */
120 #define OPTION_ARG_OPTIONAL 0x1
121
122 /* This option isn't displayed in any help messages. */
123 #define OPTION_HIDDEN 0x2
124
125 /* This option is an alias for the closest previous non-alias option. This
126 means that it will be displayed in the same help entry, and will inherit
127 fields other than NAME and KEY from the aliased option. */
128 #define OPTION_ALIAS 0x4
129
130 /* This option isn't actually an option (and so should be ignored by the
131 actual option parser), but rather an arbitrary piece of documentation that
132 should be displayed in much the same manner as the options. If this flag
133 is set, then the option NAME field is displayed unmodified (e.g., no `--'
134 prefix is added) at the left-margin (where a *short* option would normally
135 be displayed), and the documentation string in the normal place. For
136 purposes of sorting, any leading whitespace and punctuation is ignored,
137 except that if the first non-whitespace character is not `-', this entry
138 is displayed after all options (and OPTION_DOC entries with a leading `-')
139 in the same group. */
140 #define OPTION_DOC 0x8
141
142 /* This option shouldn't be included in `long' usage messages (but is still
143 included in help messages). This is mainly intended for options that are
144 completely documented in an argp's ARGS_DOC field, in which case including
145 the option in the generic usage list would be redundant. For instance,
146 if ARGS_DOC is "FOO BAR\n-x BLAH", and the `-x' option's purpose is to
147 distinguish these two cases, -x should probably be marked
148 OPTION_NO_USAGE. */
149 #define OPTION_NO_USAGE 0x10
150
151 struct argp; /* fwd declare this type */
152 struct argp_state; /* " */
153 struct argp_child; /* " */
154
155 /* The type of a pointer to an argp parsing function. */
156 typedef error_t (*argp_parser_t) (int __key, char *__arg,
157 struct argp_state *__state);
158
159 /* What to return for unrecognized keys. For special ARGP_KEY_ keys, such
160 returns will simply be ignored. For user keys, this error will be turned
161 into EINVAL (if the call to argp_parse is such that errors are propagated
162 back to the user instead of exiting); returning EINVAL itself would result
163 in an immediate stop to parsing in *all* cases. */
164 #define ARGP_ERR_UNKNOWN E2BIG /* Hurd should never need E2BIG. XXX */
165
166 /* Special values for the KEY argument to an argument parsing function.
167 ARGP_ERR_UNKNOWN should be returned if they aren't understood.
168
169 The sequence of keys to a parsing function is either (where each
170 uppercased word should be prefixed by `ARGP_KEY_' and opt is a user key):
171
172 INIT opt... NO_ARGS END SUCCESS -- No non-option arguments at all
173 or INIT (opt | ARG)... END SUCCESS -- All non-option args parsed
174 or INIT (opt | ARG)... SUCCESS -- Some non-option arg unrecognized
175
176 The third case is where every parser returned ARGP_KEY_UNKNOWN for an
177 argument, in which case parsing stops at that argument (returning the
178 unparsed arguments to the caller of argp_parse if requested, or stopping
179 with an error message if not).
180
181 If an error occurs (either detected by argp, or because the parsing
182 function returned an error value), then the parser is called with
183 ARGP_KEY_ERROR, and no further calls are made. */
184
185 /* This is not an option at all, but rather a command line argument. If a
186 parser receiving this key returns success, the fact is recorded, and the
187 ARGP_KEY_NO_ARGS case won't be used. HOWEVER, if while processing the
188 argument, a parser function decrements the NEXT field of the state it's
189 passed, the option won't be considered processed; this is to allow you to
190 actually modify the argument (perhaps into an option), and have it
191 processed again. */
192 #define ARGP_KEY_ARG 0
193 /* There are remaining arguments not parsed by any parser, which may be found
194 starting at (STATE->argv + STATE->next). If success is returned, but
195 STATE->next left untouched, it's assumed that all arguments were consume,
196 otherwise, the parser should adjust STATE->next to reflect any arguments
197 consumed. */
198 #define ARGP_KEY_ARGS 0x1000006
199 /* There are no more command line arguments at all. */
200 #define ARGP_KEY_END 0x1000001
201 /* Because it's common to want to do some special processing if there aren't
202 any non-option args, user parsers are called with this key if they didn't
203 successfully process any non-option arguments. Called just before
204 ARGP_KEY_END (where more general validity checks on previously parsed
205 arguments can take place). */
206 #define ARGP_KEY_NO_ARGS 0x1000002
207 /* Passed in before any parsing is done. Afterwards, the values of each
208 element of the CHILD_INPUT field, if any, in the state structure is
209 copied to each child's state to be the initial value of the INPUT field. */
210 #define ARGP_KEY_INIT 0x1000003
211 /* Use after all other keys, including SUCCESS & END. */
212 #define ARGP_KEY_FINI 0x1000007
213 /* Passed in when parsing has successfully been completed (even if there are
214 still arguments remaining). */
215 #define ARGP_KEY_SUCCESS 0x1000004
216 /* Passed in if an error occurs. */
217 #define ARGP_KEY_ERROR 0x1000005
218
219 /* An argp structure contains a set of options declarations, a function to
220 deal with parsing one, documentation string, a possible vector of child
221 argp's, and perhaps a function to filter help output. When actually
222 parsing options, getopt is called with the union of all the argp
223 structures chained together through their CHILD pointers, with conflicts
224 being resolved in favor of the first occurrence in the chain. */
225 struct argp
226 {
227 /* An array of argp_option structures, terminated by an entry with both
228 NAME and KEY having a value of 0. */
229 __const struct argp_option *options;
230
231 /* What to do with an option from this structure. KEY is the key
232 associated with the option, and ARG is any associated argument (NULL if
233 none was supplied). If KEY isn't understood, ARGP_ERR_UNKNOWN should be
234 returned. If a non-zero, non-ARGP_ERR_UNKNOWN value is returned, then
235 parsing is stopped immediately, and that value is returned from
236 argp_parse(). For special (non-user-supplied) values of KEY, see the
237 ARGP_KEY_ definitions below. */
238 argp_parser_t parser;
239
240 /* A string describing what other arguments are wanted by this program. It
241 is only used by argp_usage to print the `Usage:' message. If it
242 contains newlines, the strings separated by them are considered
243 alternative usage patterns, and printed on separate lines (lines after
244 the first are prefix by ` or: ' instead of `Usage:'). */
245 __const char *args_doc;
246
247 /* If non-NULL, a string containing extra text to be printed before and
248 after the options in a long help message (separated by a vertical tab
249 `\v' character). */
250 __const char *doc;
251
252 /* A vector of argp_children structures, terminated by a member with a 0
253 argp field, pointing to child argps should be parsed with this one. Any
254 conflicts are resolved in favor of this argp, or early argps in the
255 CHILDREN list. This field is useful if you use libraries that supply
256 their own argp structure, which you want to use in conjunction with your
257 own. */
258 __const struct argp_child *children;
259
260 /* If non-zero, this should be a function to filter the output of help
261 messages. KEY is either a key from an option, in which case TEXT is
262 that option's help text, or a special key from the ARGP_KEY_HELP_
263 defines, below, describing which other help text TEXT is. The function
264 should return either TEXT, if it should be used as-is, a replacement
265 string, which should be malloced, and will be freed by argp, or NULL,
266 meaning `print nothing'. The value for TEXT is *after* any translation
267 has been done, so if any of the replacement text also needs translation,
268 that should be done by the filter function. INPUT is either the input
269 supplied to argp_parse, or NULL, if argp_help was called directly. */
270 char *(*help_filter) (int __key, __const char *__text, void *__input);
271
272 /* If non-zero the strings used in the argp library are translated using
273 the domain described by this string. Otherwise the currently installed
274 default domain is used. */
275 const char *argp_domain;
276 };
277
278 /* Possible KEY arguments to a help filter function. */
279 #define ARGP_KEY_HELP_PRE_DOC 0x2000001 /* Help text preceeding options. */
280 #define ARGP_KEY_HELP_POST_DOC 0x2000002 /* Help text following options. */
281 #define ARGP_KEY_HELP_HEADER 0x2000003 /* Option header string. */
282 #define ARGP_KEY_HELP_EXTRA 0x2000004 /* After all other documentation;
283 TEXT is NULL for this key. */
284 /* Explanatory note emitted when duplicate option arguments have been
285 suppressed. */
286 #define ARGP_KEY_HELP_DUP_ARGS_NOTE 0x2000005
287 #define ARGP_KEY_HELP_ARGS_DOC 0x2000006 /* Argument doc string. */
288
289 /* When an argp has a non-zero CHILDREN field, it should point to a vector of
290 argp_child structures, each of which describes a subsidiary argp. */
291 struct argp_child
292 {
293 /* The child parser. */
294 __const struct argp *argp;
295
296 /* Flags for this child. */
297 int flags;
298
299 /* If non-zero, an optional header to be printed in help output before the
300 child options. As a side-effect, a non-zero value forces the child
301 options to be grouped together; to achieve this effect without actually
302 printing a header string, use a value of "". */
303 __const char *header;
304
305 /* Where to group the child options relative to the other (`consolidated')
306 options in the parent argp; the values are the same as the GROUP field
307 in argp_option structs, but all child-groupings follow parent options at
308 a particular group level. If both this field and HEADER are zero, then
309 they aren't grouped at all, but rather merged with the parent options
310 (merging the child's grouping levels with the parents). */
311 int group;
312 };
313
314 /* Parsing state. This is provided to parsing functions called by argp,
315 which may examine and, as noted, modify fields. */
316 struct argp_state
317 {
318 /* The top level ARGP being parsed. */
319 __const struct argp *root_argp;
320
321 /* The argument vector being parsed. May be modified. */
322 int argc;
323 char **argv;
324
325 /* The index in ARGV of the next arg that to be parsed. May be modified. */
326 int next;
327
328 /* The flags supplied to argp_parse. May be modified. */
329 unsigned flags;
330
331 /* While calling a parsing function with a key of ARGP_KEY_ARG, this is the
332 number of the current arg, starting at zero, and incremented after each
333 such call returns. At all other times, this is the number of such
334 arguments that have been processed. */
335 unsigned arg_num;
336
337 /* If non-zero, the index in ARGV of the first argument following a special
338 `--' argument (which prevents anything following being interpreted as an
339 option). Only set once argument parsing has proceeded past this point. */
340 int quoted;
341
342 /* An arbitrary pointer passed in from the user. */
343 void *input;
344 /* Values to pass to child parsers. This vector will be the same length as
345 the number of children for the current parser. */
346 void **child_inputs;
347
348 /* For the parser's use. Initialized to 0. */
349 void *hook;
350
351 /* The name used when printing messages. This is initialized to ARGV[0],
352 or PROGRAM_INVOCATION_NAME if that is unavailable. */
353 char *name;
354
355 /* Streams used when argp prints something. */
356 FILE *err_stream; /* For errors; initialized to stderr. */
357 FILE *out_stream; /* For information; initialized to stdout. */
358
359 void *pstate; /* Private, for use by argp. */
360 };
361
362 /* Flags for argp_parse (note that the defaults are those that are
363 convenient for program command line parsing): */
364
365 /* Don't ignore the first element of ARGV. Normally (and always unless
366 ARGP_NO_ERRS is set) the first element of the argument vector is
367 skipped for option parsing purposes, as it corresponds to the program name
368 in a command line. */
369 #define ARGP_PARSE_ARGV0 0x01
370
371 /* Don't print error messages for unknown options to stderr; unless this flag
372 is set, ARGP_PARSE_ARGV0 is ignored, as ARGV[0] is used as the program
373 name in the error messages. This flag implies ARGP_NO_EXIT (on the
374 assumption that silent exiting upon errors is bad behaviour). */
375 #define ARGP_NO_ERRS 0x02
376
377 /* Don't parse any non-option args. Normally non-option args are parsed by
378 calling the parse functions with a key of ARGP_KEY_ARG, and the actual arg
379 as the value. Since it's impossible to know which parse function wants to
380 handle it, each one is called in turn, until one returns 0 or an error
381 other than ARGP_ERR_UNKNOWN; if an argument is handled by no one, the
382 argp_parse returns prematurely (but with a return value of 0). If all
383 args have been parsed without error, all parsing functions are called one
384 last time with a key of ARGP_KEY_END. This flag needn't normally be set,
385 as the normal behavior is to stop parsing as soon as some argument can't
386 be handled. */
387 #define ARGP_NO_ARGS 0x04
388
389 /* Parse options and arguments in the same order they occur on the command
390 line -- normally they're rearranged so that all options come first. */
391 #define ARGP_IN_ORDER 0x08
392
393 /* Don't provide the standard long option --help, which causes usage and
394 option help information to be output to stdout, and exit (0) called. */
395 #define ARGP_NO_HELP 0x10
396
397 /* Don't exit on errors (they may still result in error messages). */
398 #define ARGP_NO_EXIT 0x20
399
400 /* Use the gnu getopt `long-only' rules for parsing arguments. */
401 #define ARGP_LONG_ONLY 0x40
402
403 /* Turns off any message-printing/exiting options. */
404 #define ARGP_SILENT (ARGP_NO_EXIT | ARGP_NO_ERRS | ARGP_NO_HELP)
405
406 /* Parse the options strings in ARGC & ARGV according to the options in ARGP.
407 FLAGS is one of the ARGP_ flags above. If ARG_INDEX is non-NULL, the
408 index in ARGV of the first unparsed option is returned in it. If an
409 unknown option is present, ARGP_ERR_UNKNOWN is returned; if some parser
410 routine returned a non-zero value, it is returned; otherwise 0 is
411 returned. This function may also call exit unless the ARGP_NO_HELP flag
412 is set. INPUT is a pointer to a value to be passed in to the parser. */
413 extern error_t argp_parse (__const struct argp *__restrict __argp,
414 int __argc, char **__restrict __argv,
415 unsigned __flags, int *__restrict __arg_index,
416 void *__restrict __input);
417
418 /* Global variables. */
419
420 /* If defined or set by the user program to a non-zero value, then a default
421 option --version is added (unless the ARGP_NO_HELP flag is used), which
422 will print this string followed by a newline and exit (unless the
423 ARGP_NO_EXIT flag is used). Overridden by ARGP_PROGRAM_VERSION_HOOK. */
424 extern __const char *argp_program_version;
425
426 /* If defined or set by the user program to a non-zero value, then a default
427 option --version is added (unless the ARGP_NO_HELP flag is used), which
428 calls this function with a stream to print the version to and a pointer to
429 the current parsing state, and then exits (unless the ARGP_NO_EXIT flag is
430 used). This variable takes precedent over ARGP_PROGRAM_VERSION. */
431 extern void (*argp_program_version_hook) (FILE *__restrict __stream,
432 struct argp_state *__restrict
433 __state);
434
435 /* If defined or set by the user program, it should point to string that is
436 the bug-reporting address for the program. It will be printed by
437 argp_help if the ARGP_HELP_BUG_ADDR flag is set (as it is by various
438 standard help messages), embedded in a sentence that says something like
439 `Report bugs to ADDR.'. */
440 extern __const char *argp_program_bug_address;
441
442 /* The exit status that argp will use when exiting due to a parsing error.
443 If not defined or set by the user program, this defaults to EX_USAGE from
444 <sysexits.h>. */
445 extern error_t argp_err_exit_status;
446
447 /* Flags for argp_help. */
448 #define ARGP_HELP_USAGE 0x01 /* a Usage: message. */
449 #define ARGP_HELP_SHORT_USAGE 0x02 /* " but don't actually print options. */
450 #define ARGP_HELP_SEE 0x04 /* a `Try ... for more help' message. */
451 #define ARGP_HELP_LONG 0x08 /* a long help message. */
452 #define ARGP_HELP_PRE_DOC 0x10 /* doc string preceding long help. */
453 #define ARGP_HELP_POST_DOC 0x20 /* doc string following long help. */
454 #define ARGP_HELP_DOC (ARGP_HELP_PRE_DOC | ARGP_HELP_POST_DOC)
455 #define ARGP_HELP_BUG_ADDR 0x40 /* bug report address */
456 #define ARGP_HELP_LONG_ONLY 0x80 /* modify output appropriately to
457 reflect ARGP_LONG_ONLY mode. */
458
459 /* These ARGP_HELP flags are only understood by argp_state_help. */
460 #define ARGP_HELP_EXIT_ERR 0x100 /* Call exit(1) instead of returning. */
461 #define ARGP_HELP_EXIT_OK 0x200 /* Call exit(0) instead of returning. */
462
463 /* The standard thing to do after a program command line parsing error, if an
464 error message has already been printed. */
465 #define ARGP_HELP_STD_ERR \
466 (ARGP_HELP_SEE | ARGP_HELP_EXIT_ERR)
467 /* The standard thing to do after a program command line parsing error, if no
468 more specific error message has been printed. */
469 #define ARGP_HELP_STD_USAGE \
470 (ARGP_HELP_SHORT_USAGE | ARGP_HELP_SEE | ARGP_HELP_EXIT_ERR)
471 /* The standard thing to do in response to a --help option. */
472 #define ARGP_HELP_STD_HELP \
473 (ARGP_HELP_SHORT_USAGE | ARGP_HELP_LONG | ARGP_HELP_EXIT_OK \
474 | ARGP_HELP_DOC | ARGP_HELP_BUG_ADDR)
475
476 /* Output a usage message for ARGP to STREAM. FLAGS are from the set
477 ARGP_HELP_*. */
478 extern void argp_help (__const struct argp *__restrict __argp,
479 FILE *__restrict __stream,
480 unsigned __flags, char *__restrict __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_*. */
492 extern void argp_state_help (__const struct argp_state *__restrict __state,
493 FILE *__restrict __stream,
494 unsigned int __flags);
495 /* Possibly output the standard usage message for ARGP to stderr and exit. */
496 extern void argp_usage (__const struct argp_state *__state);
497
498 /* If appropriate, print the printf string FMT and following args, preceded
499 by the program name and `:', to stderr, and followed by a `Try ... --help'
500 message, then exit (1). */
501 extern void argp_error (__const struct argp_state *__restrict __state,
502 __const char *__restrict __fmt, ...)
503 __attribute__ ((__format__ (__printf__, 2, 3)));
504 /* Similar to the standard gnu error-reporting function error(), but will
505 respect the ARGP_NO_EXIT and ARGP_NO_ERRS flags in STATE, and will print
506 to STATE->err_stream. This is useful for argument parsing code that is
507 shared between program startup (when exiting is desired) and runtime
508 option parsing (when typically an error code is returned instead). The
509 difference between this function and argp_error is that the latter is for
510 *parsing errors*, and the former is for other problems that occur during
511 parsing but don't reflect a (syntactic) problem with the input. */
512 extern void argp_failure (__const struct argp_state *__restrict __state,
513 int __status, int __errnum,
514 __const char *__restrict __fmt, ...)
515 __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;
519
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;
524
525 /* Return the input field for ARGP in the parser corresponding to STATE; used
526 by the help routines. */
527 /* We think this should not be exported */
528 extern void *__argp_input (__const struct argp *__restrict __argp,
529 __const struct argp_state *__restrict __state)
530 __THROW;
531
532 #ifdef __USE_EXTERN_INLINES
533
534 # ifndef ARGP_EI
535 # define ARGP_EI __extern_inline
536 # endif
537
538 ARGP_EI void
argp_usage(__const struct argp_state * __state)539 argp_usage (__const struct argp_state *__state)
540 {
541 argp_state_help (__state, stderr, ARGP_HELP_STD_USAGE);
542 }
543
544 ARGP_EI int
__NTH(__option_is_short (__const struct argp_option * __opt))545 __NTH (__option_is_short (__const struct argp_option *__opt))
546 {
547 if (__opt->flags & OPTION_DOC)
548 return 0;
549 else
550 {
551 int __key = __opt->key;
552 return __key > 0 && __key <= UCHAR_MAX && isprint (__key);
553 }
554 }
555
556 ARGP_EI int
__NTH(__option_is_end (__const struct argp_option * __opt))557 __NTH (__option_is_end (__const struct argp_option *__opt))
558 {
559 return !__opt->key && !__opt->name && !__opt->doc && !__opt->group;
560 }
561 #endif /* Use extern inlines. */
562
563 #ifdef __cplusplus
564 }
565 #endif
566
567 #ifdef __UCLIBC_ATTRIBUTE_FALLBACK__
568 # undef __attribute__
569 #endif
570
571 #ifdef __UCLIBC_PRINTF_FALLBACK__
572 # undef __format__
573 # undef __printf__
574 #endif
575
576 #endif /* argp.h */
577