argp/argp.h

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