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lib/argcv.h
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1 | /* GNU mailutils - a suite of utilities for electronic mail | ||
2 | Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc. | ||
3 | |||
4 | This program is free software; you can redistribute it and/or modify | ||
5 | it under the terms of the GNU General Public License as published by | ||
6 | the Free Software Foundation; either version 2, or (at your option) | ||
7 | any later version. | ||
8 | |||
9 | This program is distributed in the hope that it will be useful, | ||
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
12 | GNU General Public License for more details. | ||
13 | |||
14 | You should have received a copy of the GNU General Public License | ||
15 | along with this program; if not, write to the Free Software | ||
16 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | ||
17 | |||
18 | #ifndef _ARGCV_H | ||
19 | #define _ARGCV_H 1 | ||
20 | |||
21 | #include <stdio.h> | ||
22 | #include <stdlib.h> | ||
23 | #include <unistd.h> | ||
24 | #include <string.h> | ||
25 | |||
26 | #ifdef __cplusplus | ||
27 | extern "C" { | ||
28 | #endif | ||
29 | |||
30 | #ifndef __P | ||
31 | # if defined PROTOTYPES || (defined __STDC__ && __STDC__) | ||
32 | # define __P(args) args | ||
33 | # else | ||
34 | # define __P(args) () | ||
35 | # endif | ||
36 | #endif /*__P */ | ||
37 | |||
38 | extern int argcv_get __P ((const char *command, const char *delim, | ||
39 | const char* cmnt, | ||
40 | int *argc, char ***argv)); | ||
41 | extern int argcv_string __P ((int argc, char **argv, char **string)); | ||
42 | extern int argcv_free __P ((int argc, char **argv)); | ||
43 | |||
44 | #ifdef __cplusplus | ||
45 | } | ||
46 | #endif | ||
47 | |||
48 | #endif /* _ARGCV_H */ |
lib/argp.h
deleted
100644 → 0
1 | /* Hierarchial argument parsing, layered over getopt. | ||
2 | Copyright (C) 1995, 1996, 1997, 1998, 1999, 2001 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 | #include <getopt.h> | ||
27 | |||
28 | #define __need_error_t | ||
29 | #include <errno.h> | ||
30 | |||
31 | #ifndef __error_t_defined | ||
32 | typedef int error_t; | ||
33 | # define __error_t_defined | ||
34 | #endif | ||
35 | |||
36 | /* My libc doesn't have these. -mccallum@jprc.com */ | ||
37 | #ifndef HAVE_PROGRAM_INVOCATION_NAME | ||
38 | extern char *program_invocation_short_name; | ||
39 | extern char *program_invocation_name; | ||
40 | #endif | ||
41 | |||
42 | #ifdef __cplusplus | ||
43 | extern "C" { | ||
44 | #endif | ||
45 | |||
46 | /* A description of a particular option. A pointer to an array of | ||
47 | these is passed in the OPTIONS field of an argp structure. Each option | ||
48 | entry can correspond to one long option and/or one short option; more | ||
49 | names for the same option can be added by following an entry in an option | ||
50 | array with options having the OPTION_ALIAS flag set. */ | ||
51 | struct argp_option | ||
52 | { | ||
53 | /* The long option name. For more than one name for the same option, you | ||
54 | can use following options with the OPTION_ALIAS flag set. */ | ||
55 | const char *name; | ||
56 | |||
57 | /* What key is returned for this option. If > 0 and printable, then it's | ||
58 | also accepted as a short option. */ | ||
59 | int key; | ||
60 | |||
61 | /* If non-NULL, this is the name of the argument associated with this | ||
62 | option, which is required unless the OPTION_ARG_OPTIONAL flag is set. */ | ||
63 | const char *arg; | ||
64 | |||
65 | /* OPTION_ flags. */ | ||
66 | int flags; | ||
67 | |||
68 | /* The doc string for this option. If both NAME and KEY are 0, This string | ||
69 | will be printed outdented from the normal option column, making it | ||
70 | useful as a group header (it will be the first thing printed in its | ||
71 | group); in this usage, it's conventional to end the string with a `:'. */ | ||
72 | const char *doc; | ||
73 | |||
74 | /* The group this option is in. In a long help message, options are sorted | ||
75 | alphabetically within each group, and the groups presented in the order | ||
76 | 0, 1, 2, ..., n, -m, ..., -2, -1. Every entry in an options array with | ||
77 | if this field 0 will inherit the group number of the previous entry, or | ||
78 | zero if it's the first one, unless its a group header (NAME and KEY both | ||
79 | 0), in which case, the previous entry + 1 is the default. Automagic | ||
80 | options such as --help are put into group -1. */ | ||
81 | int group; | ||
82 | }; | ||
83 | |||
84 | /* The argument associated with this option is optional. */ | ||
85 | #define OPTION_ARG_OPTIONAL 0x1 | ||
86 | |||
87 | /* This option isn't displayed in any help messages. */ | ||
88 | #define OPTION_HIDDEN 0x2 | ||
89 | |||
90 | /* This option is an alias for the closest previous non-alias option. This | ||
91 | means that it will be displayed in the same help entry, and will inherit | ||
92 | fields other than NAME and KEY from the aliased option. */ | ||
93 | #define OPTION_ALIAS 0x4 | ||
94 | |||
95 | /* This option isn't actually an option (and so should be ignored by the | ||
96 | actual option parser), but rather an arbitrary piece of documentation that | ||
97 | should be displayed in much the same manner as the options. If this flag | ||
98 | is set, then the option NAME field is displayed unmodified (e.g., no `--' | ||
99 | prefix is added) at the left-margin (where a *short* option would normally | ||
100 | be displayed), and the documentation string in the normal place. For | ||
101 | purposes of sorting, any leading whitespace and puncuation is ignored, | ||
102 | except that if the first non-whitespace character is not `-', this entry | ||
103 | is displayed after all options (and OPTION_DOC entries with a leading `-') | ||
104 | in the same group. */ | ||
105 | #define OPTION_DOC 0x8 | ||
106 | |||
107 | /* This option shouldn't be included in `long' usage messages (but is still | ||
108 | included in help messages). This is mainly intended for options that are | ||
109 | completely documented in an argp's ARGS_DOC field, in which case including | ||
110 | the option in the generic usage list would be redundant. For instance, | ||
111 | if ARGS_DOC is "FOO BAR\n-x BLAH", and the `-x' option's purpose is to | ||
112 | distinguish these two cases, -x should probably be marked | ||
113 | OPTION_NO_USAGE. */ | ||
114 | #define OPTION_NO_USAGE 0x10 | ||
115 | |||
116 | struct argp; /* fwd declare this type */ | ||
117 | struct argp_state; /* " */ | ||
118 | struct argp_child; /* " */ | ||
119 | |||
120 | /* The type of a pointer to an argp parsing function. */ | ||
121 | typedef error_t (*argp_parser_t) (int key, char *arg, | ||
122 | struct argp_state *state); | ||
123 | |||
124 | /* What to return for unrecognized keys. For special ARGP_KEY_ keys, such | ||
125 | returns will simply be ignored. For user keys, this error will be turned | ||
126 | into EINVAL (if the call to argp_parse is such that errors are propagated | ||
127 | back to the user instead of exiting); returning EINVAL itself would result | ||
128 | in an immediate stop to parsing in *all* cases. */ | ||
129 | #define ARGP_ERR_UNKNOWN E2BIG /* Hurd should never need E2BIG. XXX */ | ||
130 | |||
131 | /* Special values for the KEY argument to an argument parsing function. | ||
132 | ARGP_ERR_UNKNOWN should be returned if they aren't understood. | ||
133 | |||
134 | The sequence of keys to a parsing function is either (where each | ||
135 | uppercased word should be prefixed by `ARGP_KEY_' and opt is a user key): | ||
136 | |||
137 | INIT opt... NO_ARGS END SUCCESS -- No non-option arguments at all | ||
138 | or INIT (opt | ARG)... END SUCCESS -- All non-option args parsed | ||
139 | or INIT (opt | ARG)... SUCCESS -- Some non-option arg unrecognized | ||
140 | |||
141 | The third case is where every parser returned ARGP_KEY_UNKNOWN for an | ||
142 | argument, in which case parsing stops at that argument (returning the | ||
143 | unparsed arguments to the caller of argp_parse if requested, or stopping | ||
144 | with an error message if not). | ||
145 | |||
146 | If an error occurs (either detected by argp, or because the parsing | ||
147 | function returned an error value), then the parser is called with | ||
148 | ARGP_KEY_ERROR, and no further calls are made. */ | ||
149 | |||
150 | /* This is not an option at all, but rather a command line argument. If a | ||
151 | parser receiving this key returns success, the fact is recorded, and the | ||
152 | ARGP_KEY_NO_ARGS case won't be used. HOWEVER, if while processing the | ||
153 | argument, a parser function decrements the NEXT field of the state it's | ||
154 | passed, the option won't be considered processed; this is to allow you to | ||
155 | actually modify the argument (perhaps into an option), and have it | ||
156 | processed again. */ | ||
157 | #define ARGP_KEY_ARG 0 | ||
158 | /* There are remaining arguments not parsed by any parser, which may be found | ||
159 | starting at (STATE->argv + STATE->next). If success is returned, but | ||
160 | STATE->next left untouched, it's assumed that all arguments were consume, | ||
161 | otherwise, the parser should adjust STATE->next to reflect any arguments | ||
162 | consumed. */ | ||
163 | #define ARGP_KEY_ARGS 0x1000006 | ||
164 | /* There are no more command line arguments at all. */ | ||
165 | #define ARGP_KEY_END 0x1000001 | ||
166 | /* Because it's common to want to do some special processing if there aren't | ||
167 | any non-option args, user parsers are called with this key if they didn't | ||
168 | successfully process any non-option arguments. Called just before | ||
169 | ARGP_KEY_END (where more general validity checks on previously parsed | ||
170 | arguments can take place). */ | ||
171 | #define ARGP_KEY_NO_ARGS 0x1000002 | ||
172 | /* Passed in before any parsing is done. Afterwards, the values of each | ||
173 | element of the CHILD_INPUT field, if any, in the state structure is | ||
174 | copied to each child's state to be the initial value of the INPUT field. */ | ||
175 | #define ARGP_KEY_INIT 0x1000003 | ||
176 | /* Use after all other keys, including SUCCESS & END. */ | ||
177 | #define ARGP_KEY_FINI 0x1000007 | ||
178 | /* Passed in when parsing has successfully been completed (even if there are | ||
179 | still arguments remaining). */ | ||
180 | #define ARGP_KEY_SUCCESS 0x1000004 | ||
181 | /* Passed in if an error occurs. */ | ||
182 | #define ARGP_KEY_ERROR 0x1000005 | ||
183 | |||
184 | /* An argp structure contains a set of options declarations, a function to | ||
185 | deal with parsing one, documentation string, a possible vector of child | ||
186 | argp's, and perhaps a function to filter help output. When actually | ||
187 | parsing options, getopt is called with the union of all the argp | ||
188 | structures chained together through their CHILD pointers, with conflicts | ||
189 | being resolved in favor of the first occurrence in the chain. */ | ||
190 | struct argp | ||
191 | { | ||
192 | /* An array of argp_option structures, terminated by an entry with both | ||
193 | NAME and KEY having a value of 0. */ | ||
194 | const struct argp_option *options; | ||
195 | |||
196 | /* What to do with an option from this structure. KEY is the key | ||
197 | associated with the option, and ARG is any associated argument (NULL if | ||
198 | none was supplied). If KEY isn't understood, ARGP_ERR_UNKNOWN should be | ||
199 | returned. If a non-zero, non-ARGP_ERR_UNKNOWN value is returned, then | ||
200 | parsing is stopped immediately, and that value is returned from | ||
201 | argp_parse(). For special (non-user-supplied) values of KEY, see the | ||
202 | ARGP_KEY_ definitions below. */ | ||
203 | argp_parser_t parser; | ||
204 | |||
205 | /* A string describing what other arguments are wanted by this program. It | ||
206 | is only used by argp_usage to print the `Usage:' message. If it | ||
207 | contains newlines, the strings separated by them are considered | ||
208 | alternative usage patterns, and printed on separate lines (lines after | ||
209 | the first are prefix by ` or: ' instead of `Usage:'). */ | ||
210 | const char *args_doc; | ||
211 | |||
212 | /* If non-NULL, a string containing extra text to be printed before and | ||
213 | after the options in a long help message (separated by a vertical tab | ||
214 | `\v' character). */ | ||
215 | const char *doc; | ||
216 | |||
217 | /* A vector of argp_children structures, terminated by a member with a 0 | ||
218 | argp field, pointing to child argps should be parsed with this one. Any | ||
219 | conflicts are resolved in favor of this argp, or early argps in the | ||
220 | CHILDREN list. This field is useful if you use libraries that supply | ||
221 | their own argp structure, which you want to use in conjunction with your | ||
222 | own. */ | ||
223 | const struct argp_child *children; | ||
224 | |||
225 | /* If non-zero, this should be a function to filter the output of help | ||
226 | messages. KEY is either a key from an option, in which case TEXT is | ||
227 | that option's help text, or a special key from the ARGP_KEY_HELP_ | ||
228 | defines, below, describing which other help text TEXT is. The function | ||
229 | should return either TEXT, if it should be used as-is, a replacement | ||
230 | string, which should be malloced, and will be freed by argp, or NULL, | ||
231 | meaning `print nothing'. The value for TEXT is *after* any translation | ||
232 | has been done, so if any of the replacement text also needs translation, | ||
233 | that should be done by the filter function. INPUT is either the input | ||
234 | supplied to argp_parse, or NULL, if argp_help was called directly. */ | ||
235 | char *(*help_filter) (int __key, const char *__text, void *__input); | ||
236 | |||
237 | /* If non-zero the strings used in the argp library are translated using | ||
238 | the domain described by this string. Otherwise the currently installed | ||
239 | default domain is used. */ | ||
240 | const char *argp_domain; | ||
241 | }; | ||
242 | |||
243 | /* Possible KEY arguments to a help filter function. */ | ||
244 | #define ARGP_KEY_HELP_PRE_DOC 0x2000001 /* Help text preceeding options. */ | ||
245 | #define ARGP_KEY_HELP_POST_DOC 0x2000002 /* Help text following options. */ | ||
246 | #define ARGP_KEY_HELP_HEADER 0x2000003 /* Option header string. */ | ||
247 | #define ARGP_KEY_HELP_EXTRA 0x2000004 /* After all other documentation; | ||
248 | TEXT is NULL for this key. */ | ||
249 | /* Explanatory note emitted when duplicate option arguments have been | ||
250 | suppressed. */ | ||
251 | #define ARGP_KEY_HELP_DUP_ARGS_NOTE 0x2000005 | ||
252 | #define ARGP_KEY_HELP_ARGS_DOC 0x2000006 /* Argument doc string. */ | ||
253 | |||
254 | /* When an argp has a non-zero CHILDREN field, it should point to a vector of | ||
255 | argp_child structures, each of which describes a subsidiary argp. */ | ||
256 | struct argp_child | ||
257 | { | ||
258 | /* The child parser. */ | ||
259 | const struct argp *argp; | ||
260 | |||
261 | /* Flags for this child. */ | ||
262 | int flags; | ||
263 | |||
264 | /* If non-zero, an optional header to be printed in help output before the | ||
265 | child options. As a side-effect, a non-zero value forces the child | ||
266 | options to be grouped together; to achieve this effect without actually | ||
267 | printing a header string, use a value of "". */ | ||
268 | const char *header; | ||
269 | |||
270 | /* Where to group the child options relative to the other (`consolidated') | ||
271 | options in the parent argp; the values are the same as the GROUP field | ||
272 | in argp_option structs, but all child-groupings follow parent options at | ||
273 | a particular group level. If both this field and HEADER are zero, then | ||
274 | they aren't grouped at all, but rather merged with the parent options | ||
275 | (merging the child's grouping levels with the parents). */ | ||
276 | int group; | ||
277 | }; | ||
278 | |||
279 | /* Parsing state. This is provided to parsing functions called by argp, | ||
280 | which may examine and, as noted, modify fields. */ | ||
281 | struct argp_state | ||
282 | { | ||
283 | /* The top level ARGP being parsed. */ | ||
284 | const struct argp *root_argp; | ||
285 | |||
286 | /* The argument vector being parsed. May be modified. */ | ||
287 | int argc; | ||
288 | char **argv; | ||
289 | |||
290 | /* The index in ARGV of the next arg that to be parsed. May be modified. */ | ||
291 | int next; | ||
292 | |||
293 | /* The flags supplied to argp_parse. May be modified. */ | ||
294 | unsigned flags; | ||
295 | |||
296 | /* While calling a parsing function with a key of ARGP_KEY_ARG, this is the | ||
297 | number of the current arg, starting at zero, and incremented after each | ||
298 | such call returns. At all other times, this is the number of such | ||
299 | arguments that have been processed. */ | ||
300 | unsigned arg_num; | ||
301 | |||
302 | /* If non-zero, the index in ARGV of the first argument following a special | ||
303 | `--' argument (which prevents anything following being interpreted as an | ||
304 | option). Only set once argument parsing has proceeded past this point. */ | ||
305 | int quoted; | ||
306 | |||
307 | /* An arbitrary pointer passed in from the user. */ | ||
308 | void *input; | ||
309 | /* Values to pass to child parsers. This vector will be the same length as | ||
310 | the number of children for the current parser. */ | ||
311 | void **child_inputs; | ||
312 | |||
313 | /* For the parser's use. Initialized to 0. */ | ||
314 | void *hook; | ||
315 | |||
316 | /* The name used when printing messages. This is initialized to ARGV[0], | ||
317 | or PROGRAM_INVOCATION_NAME if that is unavailable. */ | ||
318 | char *name; | ||
319 | |||
320 | /* Streams used when argp prints something. */ | ||
321 | FILE *err_stream; /* For errors; initialized to stderr. */ | ||
322 | FILE *out_stream; /* For information; initialized to stdout. */ | ||
323 | |||
324 | void *pstate; /* Private, for use by argp. */ | ||
325 | }; | ||
326 | |||
327 | /* Flags for argp_parse (note that the defaults are those that are | ||
328 | convenient for program command line parsing): */ | ||
329 | |||
330 | /* Don't ignore the first element of ARGV. Normally (and always unless | ||
331 | ARGP_NO_ERRS is set) the first element of the argument vector is | ||
332 | skipped for option parsing purposes, as it corresponds to the program name | ||
333 | in a command line. */ | ||
334 | #define ARGP_PARSE_ARGV0 0x01 | ||
335 | |||
336 | /* Don't print error messages for unknown options to stderr; unless this flag | ||
337 | is set, ARGP_PARSE_ARGV0 is ignored, as ARGV[0] is used as the program | ||
338 | name in the error messages. This flag implies ARGP_NO_EXIT (on the | ||
339 | assumption that silent exiting upon errors is bad behaviour). */ | ||
340 | #define ARGP_NO_ERRS 0x02 | ||
341 | |||
342 | /* Don't parse any non-option args. Normally non-option args are parsed by | ||
343 | calling the parse functions with a key of ARGP_KEY_ARG, and the actual arg | ||
344 | as the value. Since it's impossible to know which parse function wants to | ||
345 | handle it, each one is called in turn, until one returns 0 or an error | ||
346 | other than ARGP_ERR_UNKNOWN; if an argument is handled by no one, the | ||
347 | argp_parse returns prematurely (but with a return value of 0). If all | ||
348 | args have been parsed without error, all parsing functions are called one | ||
349 | last time with a key of ARGP_KEY_END. This flag needn't normally be set, | ||
350 | as the normal behavior is to stop parsing as soon as some argument can't | ||
351 | be handled. */ | ||
352 | #define ARGP_NO_ARGS 0x04 | ||
353 | |||
354 | /* Parse options and arguments in the same order they occur on the command | ||
355 | line -- normally they're rearranged so that all options come first. */ | ||
356 | #define ARGP_IN_ORDER 0x08 | ||
357 | |||
358 | /* Don't provide the standard long option --help, which causes usage and | ||
359 | option help information to be output to stdout, and exit (0) called. */ | ||
360 | #define ARGP_NO_HELP 0x10 | ||
361 | |||
362 | /* Don't exit on errors (they may still result in error messages). */ | ||
363 | #define ARGP_NO_EXIT 0x20 | ||
364 | |||
365 | /* Use the gnu getopt `long-only' rules for parsing arguments. */ | ||
366 | #define ARGP_LONG_ONLY 0x40 | ||
367 | |||
368 | /* Turns off any message-printing/exiting options. */ | ||
369 | #define ARGP_SILENT (ARGP_NO_EXIT | ARGP_NO_ERRS | ARGP_NO_HELP) | ||
370 | |||
371 | /* Parse the options strings in ARGC & ARGV according to the options in ARGP. | ||
372 | FLAGS is one of the ARGP_ flags above. If ARG_INDEX is non-NULL, the | ||
373 | index in ARGV of the first unparsed option is returned in it. If an | ||
374 | unknown option is present, ARGP_ERR_UNKNOWN is returned; if some parser | ||
375 | routine returned a non-zero value, it is returned; otherwise 0 is | ||
376 | returned. This function may also call exit unless the ARGP_NO_HELP flag | ||
377 | is set. INPUT is a pointer to a value to be passed in to the parser. */ | ||
378 | extern error_t argp_parse (const struct argp *__argp, | ||
379 | int __argc, char **__argv, | ||
380 | unsigned __flags, int *__arg_index, | ||
381 | void *__input); | ||
382 | extern error_t __argp_parse (const struct argp *__argp, | ||
383 | int __argc, char **__argv, | ||
384 | unsigned __flags, int *__arg_index, | ||
385 | void *__input); | ||
386 | |||
387 | /* Global variables. */ | ||
388 | |||
389 | /* If defined or set by the user program to a non-zero value, then a default | ||
390 | option --version is added (unless the ARGP_NO_HELP flag is used), which | ||
391 | will print this string followed by a newline and exit (unless the | ||
392 | ARGP_NO_EXIT flag is used). Overridden by ARGP_PROGRAM_VERSION_HOOK. */ | ||
393 | extern const char *argp_program_version; | ||
394 | |||
395 | /* If defined or set by the user program to a non-zero value, then a default | ||
396 | option --version is added (unless the ARGP_NO_HELP flag is used), which | ||
397 | calls this function with a stream to print the version to and a pointer to | ||
398 | the current parsing state, and then exits (unless the ARGP_NO_EXIT flag is | ||
399 | used). This variable takes precedent over ARGP_PROGRAM_VERSION. */ | ||
400 | extern void (*argp_program_version_hook) (FILE *__stream, | ||
401 | struct argp_state *__state); | ||
402 | |||
403 | /* If defined or set by the user program, it should point to string that is | ||
404 | the bug-reporting address for the program. It will be printed by | ||
405 | argp_help if the ARGP_HELP_BUG_ADDR flag is set (as it is by various | ||
406 | standard help messages), embedded in a sentence that says something like | ||
407 | `Report bugs to ADDR.'. */ | ||
408 | extern const char *argp_program_bug_address; | ||
409 | |||
410 | /* The exit status that argp will use when exiting due to a parsing error. | ||
411 | If not defined or set by the user program, this defaults to EX_USAGE from | ||
412 | <sysexits.h>. */ | ||
413 | extern error_t argp_err_exit_status; | ||
414 | |||
415 | /* Flags for argp_help. */ | ||
416 | #define ARGP_HELP_USAGE 0x01 /* a Usage: message. */ | ||
417 | #define ARGP_HELP_SHORT_USAGE 0x02 /* " but don't actually print options. */ | ||
418 | #define ARGP_HELP_SEE 0x04 /* a `Try ... for more help' message. */ | ||
419 | #define ARGP_HELP_LONG 0x08 /* a long help message. */ | ||
420 | #define ARGP_HELP_PRE_DOC 0x10 /* doc string preceding long help. */ | ||
421 | #define ARGP_HELP_POST_DOC 0x20 /* doc string following long help. */ | ||
422 | #define ARGP_HELP_DOC (ARGP_HELP_PRE_DOC | ARGP_HELP_POST_DOC) | ||
423 | #define ARGP_HELP_BUG_ADDR 0x40 /* bug report address */ | ||
424 | #define ARGP_HELP_LONG_ONLY 0x80 /* modify output appropriately to | ||
425 | reflect ARGP_LONG_ONLY mode. */ | ||
426 | |||
427 | /* These ARGP_HELP flags are only understood by argp_state_help. */ | ||
428 | #define ARGP_HELP_EXIT_ERR 0x100 /* Call exit(1) instead of returning. */ | ||
429 | #define ARGP_HELP_EXIT_OK 0x200 /* Call exit(0) instead of returning. */ | ||
430 | |||
431 | /* The standard thing to do after a program command line parsing error, if an | ||
432 | error message has already been printed. */ | ||
433 | #define ARGP_HELP_STD_ERR \ | ||
434 | (ARGP_HELP_SEE | ARGP_HELP_EXIT_ERR) | ||
435 | /* The standard thing to do after a program command line parsing error, if no | ||
436 | more specific error message has been printed. */ | ||
437 | #define ARGP_HELP_STD_USAGE \ | ||
438 | (ARGP_HELP_SHORT_USAGE | ARGP_HELP_SEE | ARGP_HELP_EXIT_ERR) | ||
439 | /* The standard thing to do in response to a --help option. */ | ||
440 | #define ARGP_HELP_STD_HELP \ | ||
441 | (ARGP_HELP_SHORT_USAGE | ARGP_HELP_LONG | ARGP_HELP_EXIT_OK \ | ||
442 | | ARGP_HELP_DOC | ARGP_HELP_BUG_ADDR) | ||
443 | |||
444 | /* Output a usage message for ARGP to STREAM. FLAGS are from the set | ||
445 | ARGP_HELP_*. */ | ||
446 | extern void argp_help (const struct argp *__argp, | ||
447 | FILE *__stream, | ||
448 | unsigned __flags, char *__name); | ||
449 | extern void __argp_help (const struct argp *__argp, | ||
450 | FILE *__stream, unsigned __flags, | ||
451 | char *__name); | ||
452 | |||
453 | /* The following routines are intended to be called from within an argp | ||
454 | parsing routine (thus taking an argp_state structure as the first | ||
455 | argument). They may or may not print an error message and exit, depending | ||
456 | on the flags in STATE -- in any case, the caller should be prepared for | ||
457 | them *not* to exit, and should return an appropiate error after calling | ||
458 | them. [argp_usage & argp_error should probably be called argp_state_..., | ||
459 | but they're used often enough that they should be short] */ | ||
460 | |||
461 | /* Output, if appropriate, a usage message for STATE to STREAM. FLAGS are | ||
462 | from the set ARGP_HELP_*. */ | ||
463 | extern void argp_state_help (const struct argp_state *__state, | ||
464 | FILE *__stream, | ||
465 | unsigned int __flags); | ||
466 | extern void __argp_state_help (const struct argp_state *__state, | ||
467 | FILE *__stream, | ||
468 | unsigned int __flags); | ||
469 | |||
470 | /* Possibly output the standard usage message for ARGP to stderr and exit. */ | ||
471 | extern void argp_usage (const struct argp_state *__state); | ||
472 | extern void __argp_usage (const struct argp_state *__state); | ||
473 | |||
474 | /* If appropriate, print the printf string FMT and following args, preceded | ||
475 | by the program name and `:', to stderr, and followed by a `Try ... --help' | ||
476 | message, then exit (1). */ | ||
477 | extern void argp_error (const struct argp_state *__state, | ||
478 | const char *__fmt, ...); | ||
479 | extern void __argp_error (const struct argp_state *__state, | ||
480 | const char *__fmt, ...); | ||
481 | |||
482 | /* Similar to the standard gnu error-reporting function error(), but will | ||
483 | respect the ARGP_NO_EXIT and ARGP_NO_ERRS flags in STATE, and will print | ||
484 | to STATE->err_stream. This is useful for argument parsing code that is | ||
485 | shared between program startup (when exiting is desired) and runtime | ||
486 | option parsing (when typically an error code is returned instead). The | ||
487 | difference between this function and argp_error is that the latter is for | ||
488 | *parsing errors*, and the former is for other problems that occur during | ||
489 | parsing but don't reflect a (syntactic) problem with the input. */ | ||
490 | extern void argp_failure (const struct argp_state *__state, | ||
491 | int __status, int __errnum, | ||
492 | const char *__fmt, ...); | ||
493 | extern void __argp_failure (const struct argp_state *__state, | ||
494 | int __status, int __errnum, | ||
495 | const char *__fmt, ...); | ||
496 | |||
497 | /* Returns true if the option OPT is a valid short option. */ | ||
498 | extern int _option_is_short (const struct argp_option *__opt); | ||
499 | extern int __option_is_short (const struct argp_option *__opt); | ||
500 | |||
501 | /* Returns true if the option OPT is in fact the last (unused) entry in an | ||
502 | options array. */ | ||
503 | extern int _option_is_end (const struct argp_option *__opt); | ||
504 | extern int __option_is_end (const struct argp_option *__opt); | ||
505 | |||
506 | /* Return the input field for ARGP in the parser corresponding to STATE; used | ||
507 | by the help routines. */ | ||
508 | extern void *_argp_input (const struct argp *__argp, | ||
509 | const struct argp_state *__state); | ||
510 | extern void *__argp_input (const struct argp *__argp, | ||
511 | const struct argp_state *__state); | ||
512 | |||
513 | #ifdef __USE_EXTERN_INLINES | ||
514 | |||
515 | # if !_LIBC | ||
516 | # define __argp_usage argp_usage | ||
517 | # define __argp_state_help argp_state_help | ||
518 | # define __option_is_short _option_is_short | ||
519 | # define __option_is_end _option_is_end | ||
520 | # endif | ||
521 | |||
522 | # ifndef ARGP_EI | ||
523 | # define ARGP_EI extern __inline__ | ||
524 | # endif | ||
525 | |||
526 | ARGP_EI void | ||
527 | __argp_usage (const struct argp_state *__state) | ||
528 | { | ||
529 | __argp_state_help (__state, stderr, ARGP_HELP_STD_USAGE); | ||
530 | } | ||
531 | |||
532 | ARGP_EI int | ||
533 | __option_is_short (const struct argp_option *__opt) | ||
534 | { | ||
535 | if (__opt->flags & OPTION_DOC) | ||
536 | return 0; | ||
537 | else | ||
538 | { | ||
539 | int __key = __opt->key; | ||
540 | return __key > 0 && isprint (__key); | ||
541 | } | ||
542 | } | ||
543 | |||
544 | ARGP_EI int | ||
545 | __option_is_end (const struct argp_option *__opt) | ||
546 | { | ||
547 | return !__opt->key && !__opt->name && !__opt->doc && !__opt->group; | ||
548 | } | ||
549 | |||
550 | # if !_LIBC | ||
551 | # undef __argp_usage | ||
552 | # undef __argp_state_help | ||
553 | # undef __option_is_short | ||
554 | # undef __option_is_end | ||
555 | # endif | ||
556 | #endif /* Use extern inlines. */ | ||
557 | |||
558 | #ifdef __cplusplus | ||
559 | } | ||
560 | #endif | ||
561 | |||
562 | #endif /* argp.h */ |
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