1: /* Hierarchial argument parsing, layered over getopt. 2: Copyright (C) 1995-1999, 2003, 2004, 2005, 2006, 2007 3: Free Software Foundation, Inc. 4: This file is part of the GNU C Library. 5: Written by Miles Bader <miles@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; if not, write to the Free 19: Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 20: 02111-1307 USA. */ 21: 22: #ifndef _ARGP_H 23: #define _ARGP_H 24: 25: #include <stdio.h> 26: #include <ctype.h> 27: #include <getopt.h> 28: #include <limits.h> 29: 30: #define __need_error_t 31: #include <errno.h> 32: 33: #ifndef __const 34: # define __const const 35: #endif 36: 37: #ifndef __THROW 38: # define __THROW 39: #endif 40: #ifndef __NTH 41: # define __NTH(fct) fct __THROW 42: #endif 43: 44: #ifndef __attribute__ 45: /* This feature is available in gcc versions 2.5 and later. */ 46: # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__ 47: # define __attribute__(Spec) /* empty */ 48: # endif 49: /* The __-protected variants of `format' and `printf' attributes 50: are accepted by gcc versions 2.6.4 (effectively 2.7) and later. */ 51: # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7) || __STRICT_ANSI__ 52: # define __format__ format 53: # define __printf__ printf 54: # endif 55: #endif 56: 57: /* GCC 2.95 and later have "__restrict"; C99 compilers have 58: "restrict", and "configure" may have defined "restrict". */ 59: #ifndef __restrict 60: # if ! (2 < __GNUC__ || (2 == __GNUC__ && 95 <= __GNUC_MINOR__)) 61: # if defined restrict || 199901L <= __STDC_VERSION__ 62: # define __restrict restrict 63: # else 64: # define __restrict 65: # endif 66: # endif 67: #endif 68: 69: #ifndef __error_t_defined 70: typedef int error_t; 71: # define __error_t_defined 72: #endif 73: ^L 74: #ifdef __cplusplus 75: extern "C" { 76: #endif 77: 78: /* A description of a particular option. A pointer to an array of 79: these is passed in the OPTIONS field of an argp structure. Each option 80: entry can correspond to one long option and/or one short option; more 81: names for the same option can be added by following an entry in an option 82: array with options having the OPTION_ALIAS flag set. */ 83: struct argp_option 84: { 85: /* The long option name. For more than one name for the same option, you 86: can use following options with the OPTION_ALIAS flag set. */ 87: __const char *name; 88: 89: /* What key is returned for this option. If > 0 and printable, then it's 90: also accepted as a short option. */ 91: int key; 92: 93: /* If non-NULL, this is the name of the argument associated with this 94: option, which is required unless the OPTION_ARG_OPTIONAL flag is set. */ 95: __const char *arg; 96: 97: /* OPTION_ flags. */ 98: int flags; 99: 100: /* The doc string for this option. If both NAME and KEY are 0, This string 101: will be printed outdented from the normal option column, making it 102: useful as a group header (it will be the first thing printed in its 103: group); in this usage, it's conventional to end the string with a `:'. */ 104: __const char *doc; 105: 106: /* The group this option is in. In a long help message, options are sorted 107: alphabetically within each group, and the groups presented in the order 108: 0, 1, 2, ..., n, -m, ..., -2, -1. Every entry in an options array with 109: if this field 0 will inherit the group number of the previous entry, or 110: zero if it's the first one, unless its a group header (NAME and KEY both 111: 0), in which case, the previous entry + 1 is the default. Automagic 112: options such as --help are put into group -1. */ 113: int group; 114: }; 115: 116: /* The argument associated with this option is optional. */ 117: #define OPTION_ARG_OPTIONAL 0x1 118: 119: /* This option isn't displayed in any help messages. */ 120: #define OPTION_HIDDEN 0x2 121: 122: /* This option is an alias for the closest previous non-alias option. This 123: means that it will be displayed in the same help entry, and will inherit 124: fields other than NAME and KEY from the aliased option. */ 125: #define OPTION_ALIAS 0x4 126: 127: /* This option isn't actually an option (and so should be ignored by the 128: actual option parser), but rather an arbitrary piece of documentation that 129: should be displayed in much the same manner as the options. If this flag 130: is set, then the option NAME field is displayed unmodified (e.g., no `--' 131: prefix is added) at the left-margin (where a *short* option would normally 132: be displayed), and the documentation string in the normal place. For 133: purposes of sorting, any leading whitespace and punctuation is ignored, 134: except that if the first non-whitespace character is not `-', this entry 135: is displayed after all options (and OPTION_DOC entries with a leading `-') 136: in the same group. */ 137: #define OPTION_DOC 0x8 138: 139: /* This option shouldn't be included in `long' usage messages (but is still 140: included in help messages). This is mainly intended for options that are 141: completely documented in an argp's ARGS_DOC field, in which case including 142: the option in the generic usage list would be redundant. For instance, 143: if ARGS_DOC is "FOO BAR\n-x BLAH", and the `-x' option's purpose is to 144: distinguish these two cases, -x should probably be marked 145: OPTION_NO_USAGE. */ 146: #define OPTION_NO_USAGE 0x10 147: ^L 148: struct argp; /* fwd declare this type */ 149: struct argp_state; /* " */ 150: struct argp_child; /* " */ 151: 152: /* The type of a pointer to an argp parsing function. */ 153: typedef error_t (*argp_parser_t) (int key, char *arg, 154: struct argp_state *state); 155: 156: /* What to return for unrecognized keys. For special ARGP_KEY_ keys, such 157: returns will simply be ignored. For user keys, this error will be turned 158: into EINVAL (if the call to argp_parse is such that errors are propagated 159: back to the user instead of exiting); returning EINVAL itself would result 160: in an immediate stop to parsing in *all* cases. */ 161: #define ARGP_ERR_UNKNOWN E2BIG /* Hurd should never need E2BIG. XXX */ 162: 163: /* Special values for the KEY argument to an argument parsing function. 164: ARGP_ERR_UNKNOWN should be returned if they aren't understood. 165: 166: The sequence of keys to a parsing function is either (where each 167: uppercased word should be prefixed by `ARGP_KEY_' and opt is a user key): 168: 169: INIT opt... NO_ARGS END SUCCESS -- No non-option arguments at all 170: or INIT (opt | ARG)... END SUCCESS -- All non-option args parsed 171: or INIT (opt | ARG)... SUCCESS -- Some non-option arg unrecognized 172: 173: The third case is where every parser returned ARGP_KEY_UNKNOWN for an 174: argument, in which case parsing stops at that argument (returning the 175: unparsed arguments to the caller of argp_parse if requested, or stopping 176: with an error message if not). 177: 178: If an error occurs (either detected by argp, or because the parsing 179: function returned an error value), then the parser is called with 180: ARGP_KEY_ERROR, and no further calls are made. */ 181: 182: /* This is not an option at all, but rather a command line argument. If a 183: parser receiving this key returns success, the fact is recorded, and the 184: ARGP_KEY_NO_ARGS case won't be used. HOWEVER, if while processing the 185: argument, a parser function decrements the NEXT field of the state it's 186: passed, the option won't be considered processed; this is to allow you to 187: actually modify the argument (perhaps into an option), and have it 188: processed again. */ 189: #define ARGP_KEY_ARG 0 190: /* There are remaining arguments not parsed by any parser, which may be found 191: starting at (STATE->argv + STATE->next). If success is returned, but 192: STATE->next left untouched, it's assumed that all arguments were consume, 193: otherwise, the parser should adjust STATE->next to reflect any arguments 194: consumed. */ 195: #define ARGP_KEY_ARGS 0x1000006 196: /* There are no more command line arguments at all. */ 197: #define ARGP_KEY_END 0x1000001 198: /* Because it's common to want to do some special processing if there aren't 199: any non-option args, user parsers are called with this key if they didn't 200: successfully process any non-option arguments. Called just before 201: ARGP_KEY_END (where more general validity checks on previously parsed 202: arguments can take place). */ 203: #define ARGP_KEY_NO_ARGS 0x1000002 204: /* Passed in before any parsing is done. Afterwards, the values of each 205: element of the CHILD_INPUT field, if any, in the state structure is 206: copied to each child's state to be the initial value of the INPUT field. */ 207: #define ARGP_KEY_INIT 0x1000003 208: /* Use after all other keys, including SUCCESS & END. */ 209: #define ARGP_KEY_FINI 0x1000007 210: /* Passed in when parsing has successfully been completed (even if there are 211: still arguments remaining). */ 212: #define ARGP_KEY_SUCCESS 0x1000004 213: /* Passed in if an error occurs. */ 214: #define ARGP_KEY_ERROR 0x1000005 215: 216: /* An argp structure contains a set of options declarations, a function to 217: deal with parsing one, documentation string, a possible vector of child 218: argp's, and perhaps a function to filter help output. When actually 219: parsing options, getopt is called with the union of all the argp 220: structures chained together through their CHILD pointers, with conflicts 221: being resolved in favor of the first occurrence in the chain. */ 222: struct argp 223: { 224: /* An array of argp_option structures, terminated by an entry with both 225: NAME and KEY having a value of 0. */ 226: __const struct argp_option *options; 227: 228: /* What to do with an option from this structure. KEY is the key 229: associated with the option, and ARG is any associated argument (NULL if 230: none was supplied). If KEY isn't understood, ARGP_ERR_UNKNOWN should be 231: returned. If a non-zero, non-ARGP_ERR_UNKNOWN value is returned, then 232: parsing is stopped immediately, and that value is returned from 233: argp_parse(). For special (non-user-supplied) values of KEY, see the 234: ARGP_KEY_ definitions below. */ 235: argp_parser_t parser; 236: 237: /* A string describing what other arguments are wanted by this program. It 238: is only used by argp_usage to print the `Usage:' message. If it 239: contains newlines, the strings separated by them are considered 240: alternative usage patterns, and printed on separate lines (lines after 241: the first are prefix by ` or: ' instead of `Usage:'). */ 242: __const char *args_doc; 243: 244: /* If non-NULL, a string containing extra text to be printed before and 245: after the options in a long help message (separated by a vertical tab 246: `\v' character). */ 247: __const char *doc; 248: 249: /* A vector of argp_children structures, terminated by a member with a 0 250: argp field, pointing to child argps should be parsed with this one. Any 251: conflicts are resolved in favor of this argp, or early argps in the 252: CHILDREN list. This field is useful if you use libraries that supply 253: their own argp structure, which you want to use in conjunction with your 254: own. */ 255: __const struct argp_child *children; 256: 257: /* If non-zero, this should be a function to filter the output of help 258: messages. KEY is either a key from an option, in which case TEXT is 259: that option's help text, or a special key from the ARGP_KEY_HELP_ 260: defines, below, describing which other help text TEXT is. The function 261: should return either TEXT, if it should be used as-is, a replacement 262: string, which should be malloced, and will be freed by argp, or NULL, 263: meaning `print nothing'. The value for TEXT is *after* any translation 264: has been done, so if any of the replacement text also needs translation, 265: that should be done by the filter function. INPUT is either the input 266: supplied to argp_parse, or NULL, if argp_help was called directly. */ 267: char *(*help_filter) (int __key, __const char *__text, void *__input); 268: 269: /* If non-zero the strings used in the argp library are translated using 270: the domain described by this string. Otherwise the currently installed 271: default domain is used. */ 272: const char *argp_domain; 273: }; 274: 275: /* Possible KEY arguments to a help filter function. */ 276: #define ARGP_KEY_HELP_PRE_DOC 0x2000001 /* Help text preceeding options. */ 277: #define ARGP_KEY_HELP_POST_DOC 0x2000002 /* Help text following options. */ 278: #define ARGP_KEY_HELP_HEADER 0x2000003 /* Option header string. */ 279: #define ARGP_KEY_HELP_EXTRA 0x2000004 /* After all other documentation; 280: TEXT is NULL for this key. */ 281: /* Explanatory note emitted when duplicate option arguments have been 282: suppressed. */ 283: #define ARGP_KEY_HELP_DUP_ARGS_NOTE 0x2000005 284: #define ARGP_KEY_HELP_ARGS_DOC 0x2000006 /* Argument doc string. */ 285: ^L 286: /* When an argp has a non-zero CHILDREN field, it should point to a vector of 287: argp_child structures, each of which describes a subsidiary argp. */ 288: struct argp_child 289: { 290: /* The child parser. */ 291: __const struct argp *argp; 292: 293: /* Flags for this child. */ 294: int flags; 295: 296: /* If non-zero, an optional header to be printed in help output before the 297: child options. As a side-effect, a non-zero value forces the child 298: options to be grouped together; to achieve this effect without actually 299: printing a header string, use a value of "". */ 300: __const char *header; 301: 302: /* Where to group the child options relative to the other (`consolidated') 303: options in the parent argp; the values are the same as the GROUP field 304: in argp_option structs, but all child-groupings follow parent options at 305: a particular group level. If both this field and HEADER are zero, then 306: they aren't grouped at all, but rather merged with the parent options 307: (merging the child's grouping levels with the parents). */ 308: int group; 309: }; 310: ^L 311: /* Parsing state. This is provided to parsing functions called by argp, 312: which may examine and, as noted, modify fields. */ 313: struct argp_state 314: { 315: /* The top level ARGP being parsed. */ 316: __const struct argp *root_argp; 317: 318: /* The argument vector being parsed. May be modified. */ 319: int argc; 320: char **argv; 321: 322: /* The index in ARGV of the next arg that to be parsed. May be modified. */ 323: int next; 324: 325: /* The flags supplied to argp_parse. May be modified. */ 326: unsigned flags; 327: 328: /* While calling a parsing function with a key of ARGP_KEY_ARG, this is the 329: number of the current arg, starting at zero, and incremented after each 330: such call returns. At all other times, this is the number of such 331: arguments that have been processed. */ 332: unsigned arg_num; 333: 334: /* If non-zero, the index in ARGV of the first argument following a special 335: `--' argument (which prevents anything following being interpreted as an 336: option). Only set once argument parsing has proceeded past this point. */ 337: int quoted; 338: 339: /* An arbitrary pointer passed in from the user. */ 340: void *input; 341: /* Values to pass to child parsers. This vector will be the same length as 342: the number of children for the current parser. */ 343: void **child_inputs; 344: 345: /* For the parser's use. Initialized to 0. */ 346: void *hook; 347: 348: /* The name used when printing messages. This is initialized to ARGV[0], 349: or PROGRAM_INVOCATION_NAME if that is unavailable. */ 350: char *name; 351: 352: /* Streams used when argp prints something. */ 353: FILE *err_stream; /* For errors; initialized to stderr. */ 354: FILE *out_stream; /* For information; initialized to stdout. */ 355: 356: void *pstate; /* Private, for use by argp. */ 357: }; 358: ^L 359: /* Flags for argp_parse (note that the defaults are those that are 360: convenient for program command line parsing): */ 361: 362: /* Don't ignore the first element of ARGV. Normally (and always unless 363: ARGP_NO_ERRS is set) the first element of the argument vector is 364: skipped for option parsing purposes, as it corresponds to the program name 365: in a command line. */ 366: #define ARGP_PARSE_ARGV0 0x01 367: 368: /* Don't print error messages for unknown options to stderr; unless this flag 369: is set, ARGP_PARSE_ARGV0 is ignored, as ARGV[0] is used as the program 370: name in the error messages. This flag implies ARGP_NO_EXIT (on the 371: assumption that silent exiting upon errors is bad behaviour). */ 372: #define ARGP_NO_ERRS 0x02 373: 374: /* Don't parse any non-option args. Normally non-option args are parsed by 375: calling the parse functions with a key of ARGP_KEY_ARG, and the actual arg 376: as the value. Since it's impossible to know which parse function wants to 377: handle it, each one is called in turn, until one returns 0 or an error 378: other than ARGP_ERR_UNKNOWN; if an argument is handled by no one, the 379: argp_parse returns prematurely (but with a return value of 0). If all 380: args have been parsed without error, all parsing functions are called one 381: last time with a key of ARGP_KEY_END. This flag needn't normally be set, 382: as the normal behavior is to stop parsing as soon as some argument can't 383: be handled. */ 384: #define ARGP_NO_ARGS 0x04 385: 386: /* Parse options and arguments in the same order they occur on the command 387: line -- normally they're rearranged so that all options come first. */ 388: #define ARGP_IN_ORDER 0x08 389: 390: /* Don't provide the standard long option --help, which causes usage and 391: option help information to be output to stdout, and exit (0) called. */ 392: #define ARGP_NO_HELP 0x10 393: 394: /* Don't exit on errors (they may still result in error messages). */ 395: #define ARGP_NO_EXIT 0x20 396: 397: /* Use the gnu getopt `long-only' rules for parsing arguments. */ 398: #define ARGP_LONG_ONLY 0x40 399: 400: /* Turns off any message-printing/exiting options. */ 401: #define ARGP_SILENT (ARGP_NO_EXIT | ARGP_NO_ERRS | ARGP_NO_HELP) 402: 403: /* Parse the options strings in ARGC & ARGV according to the options in ARGP. 404: FLAGS is one of the ARGP_ flags above. If ARG_INDEX is non-NULL, the 405: index in ARGV of the first unparsed option is returned in it. If an 406: unknown option is present, ARGP_ERR_UNKNOWN is returned; if some parser 407: routine returned a non-zero value, it is returned; otherwise 0 is 408: returned. This function may also call exit unless the ARGP_NO_HELP flag 409: is set. INPUT is a pointer to a value to be passed in to the parser. */ 410: extern error_t argp_parse (__const struct argp *__restrict __argp, 411: int __argc, char **__restrict __argv, 412: unsigned __flags, int *__restrict __arg_index, 413: void *__restrict __input); 414: extern error_t __argp_parse (__const struct argp *__restrict __argp, 415: int __argc, char **__restrict __argv, 416: unsigned __flags, int *__restrict __arg_index, 417: void *__restrict __input); 418: ^L 419: /* Global variables. */ 420: 421: /* If defined or set by the user program to a non-zero value, then a default 422: option --version is added (unless the ARGP_NO_HELP flag is used), which 423: will print this string followed by a newline and exit (unless the 424: ARGP_NO_EXIT flag is used). Overridden by ARGP_PROGRAM_VERSION_HOOK. */ 425: extern __const char *argp_program_version; 426: 427: /* If defined or set by the user program to a non-zero value, then a default 428: option --version is added (unless the ARGP_NO_HELP flag is used), which 429: calls this function with a stream to print the version to and a pointer to 430: the current parsing state, and then exits (unless the ARGP_NO_EXIT flag is 431: used). This variable takes precedent over ARGP_PROGRAM_VERSION. */ 432: extern void (*argp_program_version_hook) (FILE *__restrict __stream, 433: struct argp_state *__restrict 434: __state); 435: 436: /* If defined or set by the user program, it should point to string that is 437: the bug-reporting address for the program. It will be printed by 438: argp_help if the ARGP_HELP_BUG_ADDR flag is set (as it is by various 439: standard help messages), embedded in a sentence that says something like 440: `Report bugs to ADDR.'. */ 441: extern __const char *argp_program_bug_address; 442: 443: /* The exit status that argp will use when exiting due to a parsing error. 444: If not defined or set by the user program, this defaults to EX_USAGE from 445: <sysexits.h>. */ 446: extern error_t argp_err_exit_status; 447: ^L 448: /* Flags for argp_help. */ 449: #define ARGP_HELP_USAGE 0x01 /* a Usage: message. */ 450: #define ARGP_HELP_SHORT_USAGE 0x02 /* " but don't actually print options. */ 451: #define ARGP_HELP_SEE 0x04 /* a `Try ... for more help' message. */ 452: #define ARGP_HELP_LONG 0x08 /* a long help message. */ 453: #define ARGP_HELP_PRE_DOC 0x10 /* doc string preceding long help. */ 454: #define ARGP_HELP_POST_DOC 0x20 /* doc string following long help. */ 455: #define ARGP_HELP_DOC (ARGP_HELP_PRE_DOC | ARGP_HELP_POST_DOC) 456: #define ARGP_HELP_BUG_ADDR 0x40 /* bug report address */ 457: #define ARGP_HELP_LONG_ONLY 0x80 /* modify output appropriately to 458: reflect ARGP_LONG_ONLY mode. */ 459: 460: /* These ARGP_HELP flags are only understood by argp_state_help. */ 461: #define ARGP_HELP_EXIT_ERR 0x100 /* Call exit(1) instead of returning. */ 462: #define ARGP_HELP_EXIT_OK 0x200 /* Call exit(0) instead of returning. */ 463: 464: /* The standard thing to do after a program command line parsing error, if an 465: error message has already been printed. */ 466: #define ARGP_HELP_STD_ERR \ 467: (ARGP_HELP_SEE | ARGP_HELP_EXIT_ERR) 468: /* The standard thing to do after a program command line parsing error, if no 469: more specific error message has been printed. */ 470: #define ARGP_HELP_STD_USAGE \ 471: (ARGP_HELP_SHORT_USAGE | ARGP_HELP_SEE | ARGP_HELP_EXIT_ERR) 472: /* The standard thing to do in response to a --help option. */ 473: #define ARGP_HELP_STD_HELP \ 474: (ARGP_HELP_SHORT_USAGE | ARGP_HELP_LONG | ARGP_HELP_EXIT_OK \ 475: | ARGP_HELP_DOC | ARGP_HELP_BUG_ADDR) 476: 477: /* Output a usage message for ARGP to STREAM. FLAGS are from the set 478: ARGP_HELP_*. */ 479: extern void argp_help (__const struct argp *__restrict __argp, 480: FILE *__restrict __stream, 481: unsigned __flags, char *__restrict __name); 482: extern void __argp_help (__const struct argp *__restrict __argp, 483: FILE *__restrict __stream, unsigned __flags, 484: char *__name); 485: ^L 486: /* The following routines are intended to be called from within an argp 487: parsing routine (thus taking an argp_state structure as the first 488: argument). They may or may not print an error message and exit, depending 489: on the flags in STATE -- in any case, the caller should be prepared for 490: them *not* to exit, and should return an appropiate error after calling 491: them. [argp_usage & argp_error should probably be called argp_state_..., 492: but they're used often enough that they should be short] */ 493: 494: /* Output, if appropriate, a usage message for STATE to STREAM. FLAGS are 495: from the set ARGP_HELP_*. */ 496: extern void argp_state_help (__const struct argp_state *__restrict __state, 497: FILE *__restrict __stream, 498: unsigned int __flags); 499: extern void __argp_state_help (__const struct argp_state *__restrict __state, 500: FILE *__restrict __stream, 501: unsigned int __flags); 502: 503: /* Possibly output the standard usage message for ARGP to stderr and exit. */ 504: extern void argp_usage (__const struct argp_state *__state); 505: extern void __argp_usage (__const struct argp_state *__state); 506: 507: /* If appropriate, print the printf string FMT and following args, preceded 508: by the program name and `:', to stderr, and followed by a `Try ... --help' 509: message, then exit (1). */ 510: extern void argp_error (__const struct argp_state *__restrict __state, 511: __const char *__restrict __fmt, ...) 512: __attribute__ ((__format__ (__printf__, 2, 3))); 513: extern void __argp_error (__const struct argp_state *__restrict __state, 514: __const char *__restrict __fmt, ...) 515: __attribute__ ((__format__ (__printf__, 2, 3))); 516: 517: /* Similar to the standard gnu error-reporting function error(), but will 518: respect the ARGP_NO_EXIT and ARGP_NO_ERRS flags in STATE, and will print 519: to STATE->err_stream. This is useful for argument parsing code that is 520: shared between program startup (when exiting is desired) and runtime 521: option parsing (when typically an error code is returned instead). The 522: difference between this function and argp_error is that the latter is for 523: *parsing errors*, and the former is for other problems that occur during 524: parsing but don't reflect a (syntactic) problem with the input. */ 525: extern void argp_failure (__const struct argp_state *__restrict __state, 526: int __status, int __errnum, 527: __const char *__restrict __fmt, ...) 528: __attribute__ ((__format__ (__printf__, 4, 5))); 529: extern void __argp_failure (__const struct argp_state *__restrict __state, 530: int __status, int __errnum, 531: __const char *__restrict __fmt, ...) 532: __attribute__ ((__format__ (__printf__, 4, 5))); 533: 534: /* Returns true if the option OPT is a valid short option. */ 535: extern int _option_is_short (__const struct argp_option *__opt) __THROW; 536: extern int __option_is_short (__const struct argp_option *__opt) __THROW; 537: 538: /* Returns true if the option OPT is in fact the last (unused) entry in an 539: options array. */ 540: extern int _option_is_end (__const struct argp_option *__opt) __THROW; 541: extern int __option_is_end (__const struct argp_option *__opt) __THROW; 542: 543: /* Return the input field for ARGP in the parser corresponding to STATE; used 544: by the help routines. */ 545: extern void *_argp_input (__const struct argp *__restrict __argp, 546: __const struct argp_state *__restrict __state) 547: __THROW; 548: extern void *__argp_input (__const struct argp *__restrict __argp, 549: __const struct argp_state *__restrict __state) 550: __THROW; 551: ^L 552: #ifdef __USE_EXTERN_INLINES 553: 554: # if !_LIBC 555: # define __argp_usage argp_usage 556: #