They have weird semantics and lead to hard to debug linking issues. Just force static inline everywhere.
582 lines
25 KiB
C
582 lines
25 KiB
C
/* Hierarchical argument parsing, layered over getopt.
|
||
Copyright (C) 1995-2021 Free Software Foundation, Inc.
|
||
This file is part of the GNU C Library.
|
||
Written by Miles Bader <miles@gnu.ai.mit.edu>.
|
||
|
||
The GNU C Library is free software; you can redistribute it and/or
|
||
modify it under the terms of the GNU Lesser General Public
|
||
License as published by the Free Software Foundation; either
|
||
version 2.1 of the License, or (at your option) any later version.
|
||
|
||
The GNU C Library is distributed in the hope that it will be useful,
|
||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||
Lesser General Public License for more details.
|
||
|
||
You should have received a copy of the GNU Lesser General Public
|
||
License along with the GNU C Library; if not, see
|
||
<https://www.gnu.org/licenses/>. */
|
||
|
||
#ifndef _ARGP_H
|
||
#define _ARGP_H
|
||
|
||
#include <stdio.h>
|
||
#include <ctype.h>
|
||
#include <getopt.h>
|
||
#include <limits.h>
|
||
#include <errno.h>
|
||
|
||
/* From glibc's <sys/cdef.h> */
|
||
# if (defined __cplusplus \
|
||
|| (defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L))
|
||
# define __inline inline
|
||
# else
|
||
# define __inline /* No inline functions. */
|
||
# endif
|
||
|
||
# define __THROW
|
||
# define __THROWNL
|
||
# define __NTH(fct) fct
|
||
|
||
/* FIXME: conflict? */
|
||
typedef int error_t;
|
||
|
||
/* FIXME: What's the right way to check for __restrict? Sun's cc seems
|
||
not to have it. Perhaps it's easiest to just delete the use of
|
||
__restrict from the prototypes. */
|
||
#ifndef __restrict
|
||
# ifndef __GNUC___
|
||
# define __restrict
|
||
# endif
|
||
#endif
|
||
|
||
/* NOTE: We can't use the autoconf tests, since this is supposed to be
|
||
an installed header file and argp's config.h is of course not
|
||
installed. */
|
||
#ifndef PRINTF_STYLE
|
||
# if __GNUC__ >= 2
|
||
# define PRINTF_STYLE(f, a) __attribute__ ((__format__ (__printf__, f, a)))
|
||
# else
|
||
# define PRINTF_STYLE(f, a)
|
||
# endif
|
||
#endif
|
||
|
||
|
||
#ifdef __cplusplus
|
||
extern "C" {
|
||
#endif
|
||
/* A description of a particular option. A pointer to an array of
|
||
these is passed in the OPTIONS field of an argp structure. Each option
|
||
entry can correspond to one long option and/or one short option; more
|
||
names for the same option can be added by following an entry in an option
|
||
array with options having the OPTION_ALIAS flag set. */
|
||
struct argp_option
|
||
{
|
||
/* The long option name. For more than one name for the same option, you
|
||
can use following options with the OPTION_ALIAS flag set. */
|
||
const char *name;
|
||
|
||
/* What key is returned for this option. If > 0 and printable, then it's
|
||
also accepted as a short option. */
|
||
int key;
|
||
|
||
/* If non-NULL, this is the name of the argument associated with this
|
||
option, which is required unless the OPTION_ARG_OPTIONAL flag is set. */
|
||
const char *arg;
|
||
|
||
/* OPTION_ flags. */
|
||
int flags;
|
||
|
||
/* The doc string for this option. If both NAME and KEY are 0, This string
|
||
will be printed outdented from the normal option column, making it
|
||
useful as a group header (it will be the first thing printed in its
|
||
group); in this usage, it's conventional to end the string with a `:'. */
|
||
const char *doc;
|
||
|
||
/* The group this option is in. In a long help message, options are sorted
|
||
alphabetically within each group, and the groups presented in the order
|
||
0, 1, 2, ..., n, -m, ..., -2, -1. Every entry in an options array with
|
||
if this field 0 will inherit the group number of the previous entry, or
|
||
zero if it's the first one, unless its a group header (NAME and KEY both
|
||
0), in which case, the previous entry + 1 is the default. Automagic
|
||
options such as --help are put into group -1. */
|
||
int group;
|
||
};
|
||
|
||
/* The argument associated with this option is optional. */
|
||
#define OPTION_ARG_OPTIONAL 0x1
|
||
|
||
/* This option isn't displayed in any help messages. */
|
||
#define OPTION_HIDDEN 0x2
|
||
|
||
/* This option is an alias for the closest previous non-alias option. This
|
||
means that it will be displayed in the same help entry, and will inherit
|
||
fields other than NAME and KEY from the aliased option. */
|
||
#define OPTION_ALIAS 0x4
|
||
|
||
/* This option isn't actually an option (and so should be ignored by the
|
||
actual option parser), but rather an arbitrary piece of documentation that
|
||
should be displayed in much the same manner as the options. If this flag
|
||
is set, then the option NAME field is displayed unmodified (e.g., no `--'
|
||
prefix is added) at the left-margin (where a *short* option would normally
|
||
be displayed), and the documentation string in the normal place. For
|
||
purposes of sorting, any leading whitespace and punctuation is ignored,
|
||
except that if the first non-whitespace character is not `-', this entry
|
||
is displayed after all options (and OPTION_DOC entries with a leading `-')
|
||
in the same group. */
|
||
#define OPTION_DOC 0x8
|
||
|
||
/* This option shouldn't be included in `long' usage messages (but is still
|
||
included in help messages). This is mainly intended for options that are
|
||
completely documented in an argp's ARGS_DOC field, in which case including
|
||
the option in the generic usage list would be redundant. For instance,
|
||
if ARGS_DOC is "FOO BAR\n-x BLAH", and the `-x' option's purpose is to
|
||
distinguish these two cases, -x should probably be marked
|
||
OPTION_NO_USAGE. */
|
||
#define OPTION_NO_USAGE 0x10
|
||
|
||
struct argp; /* fwd declare this type */
|
||
struct argp_state; /* " */
|
||
struct argp_child; /* " */
|
||
|
||
/* The type of a pointer to an argp parsing function. */
|
||
typedef error_t (*argp_parser_t) (int __key, char *__arg,
|
||
struct argp_state *__state);
|
||
|
||
/* What to return for unrecognized keys. For special ARGP_KEY_ keys, such
|
||
returns will simply be ignored. For user keys, this error will be turned
|
||
into EINVAL (if the call to argp_parse is such that errors are propagated
|
||
back to the user instead of exiting); returning EINVAL itself would result
|
||
in an immediate stop to parsing in *all* cases. */
|
||
#define ARGP_ERR_UNKNOWN E2BIG /* Hurd should never need E2BIG. XXX */
|
||
|
||
/* Special values for the KEY argument to an argument parsing function.
|
||
ARGP_ERR_UNKNOWN should be returned if they aren't understood.
|
||
|
||
The sequence of keys to a parsing function is either (where each
|
||
uppercased word should be prefixed by `ARGP_KEY_' and opt is a user key):
|
||
|
||
INIT opt... NO_ARGS END SUCCESS -- No non-option arguments at all
|
||
or INIT (opt | ARG)... END SUCCESS -- All non-option args parsed
|
||
or INIT (opt | ARG)... SUCCESS -- Some non-option arg unrecognized
|
||
|
||
The third case is where every parser returned ARGP_KEY_UNKNOWN for an
|
||
argument, in which case parsing stops at that argument (returning the
|
||
unparsed arguments to the caller of argp_parse if requested, or stopping
|
||
with an error message if not).
|
||
|
||
If an error occurs (either detected by argp, or because the parsing
|
||
function returned an error value), then the parser is called with
|
||
ARGP_KEY_ERROR, and no further calls are made. */
|
||
|
||
/* This is not an option at all, but rather a command line argument. If a
|
||
parser receiving this key returns success, the fact is recorded, and the
|
||
ARGP_KEY_NO_ARGS case won't be used. HOWEVER, if while processing the
|
||
argument, a parser function decrements the NEXT field of the state it's
|
||
passed, the option won't be considered processed; this is to allow you to
|
||
actually modify the argument (perhaps into an option), and have it
|
||
processed again. */
|
||
#define ARGP_KEY_ARG 0
|
||
/* There are remaining arguments not parsed by any parser, which may be found
|
||
starting at (STATE->argv + STATE->next). If success is returned, but
|
||
STATE->next left untouched, it's assumed that all arguments were consume,
|
||
otherwise, the parser should adjust STATE->next to reflect any arguments
|
||
consumed. */
|
||
#define ARGP_KEY_ARGS 0x1000006
|
||
/* There are no more command line arguments at all. */
|
||
#define ARGP_KEY_END 0x1000001
|
||
/* Because it's common to want to do some special processing if there aren't
|
||
any non-option args, user parsers are called with this key if they didn't
|
||
successfully process any non-option arguments. Called just before
|
||
ARGP_KEY_END (where more general validity checks on previously parsed
|
||
arguments can take place). */
|
||
#define ARGP_KEY_NO_ARGS 0x1000002
|
||
/* Passed in before any parsing is done. Afterwards, the values of each
|
||
element of the CHILD_INPUT field, if any, in the state structure is
|
||
copied to each child's state to be the initial value of the INPUT field. */
|
||
#define ARGP_KEY_INIT 0x1000003
|
||
/* Use after all other keys, including SUCCESS & END. */
|
||
#define ARGP_KEY_FINI 0x1000007
|
||
/* Passed in when parsing has successfully been completed (even if there are
|
||
still arguments remaining). */
|
||
#define ARGP_KEY_SUCCESS 0x1000004
|
||
/* Passed in if an error occurs. */
|
||
#define ARGP_KEY_ERROR 0x1000005
|
||
|
||
/* An argp structure contains a set of options declarations, a function to
|
||
deal with parsing one, documentation string, a possible vector of child
|
||
argp's, and perhaps a function to filter help output. When actually
|
||
parsing options, getopt is called with the union of all the argp
|
||
structures chained together through their CHILD pointers, with conflicts
|
||
being resolved in favor of the first occurrence in the chain. */
|
||
struct argp
|
||
{
|
||
/* An array of argp_option structures, terminated by an entry with both
|
||
NAME and KEY having a value of 0. */
|
||
const struct argp_option *options;
|
||
|
||
/* What to do with an option from this structure. KEY is the key
|
||
associated with the option, and ARG is any associated argument (NULL if
|
||
none was supplied). If KEY isn't understood, ARGP_ERR_UNKNOWN should be
|
||
returned. If a non-zero, non-ARGP_ERR_UNKNOWN value is returned, then
|
||
parsing is stopped immediately, and that value is returned from
|
||
argp_parse(). For special (non-user-supplied) values of KEY, see the
|
||
ARGP_KEY_ definitions below. */
|
||
argp_parser_t parser;
|
||
|
||
/* A string describing what other arguments are wanted by this program. It
|
||
is only used by argp_usage to print the `Usage:' message. If it
|
||
contains newlines, the strings separated by them are considered
|
||
alternative usage patterns, and printed on separate lines (lines after
|
||
the first are prefix by ` or: ' instead of `Usage:'). */
|
||
const char *args_doc;
|
||
|
||
/* If non-NULL, a string containing extra text to be printed before and
|
||
after the options in a long help message (separated by a vertical tab
|
||
`\v' character). */
|
||
const char *doc;
|
||
|
||
/* A vector of argp_children structures, terminated by a member with a 0
|
||
argp field, pointing to child argps should be parsed with this one. Any
|
||
conflicts are resolved in favor of this argp, or early argps in the
|
||
CHILDREN list. This field is useful if you use libraries that supply
|
||
their own argp structure, which you want to use in conjunction with your
|
||
own. */
|
||
const struct argp_child *children;
|
||
|
||
/* If non-zero, this should be a function to filter the output of help
|
||
messages. KEY is either a key from an option, in which case TEXT is
|
||
that option's help text, or a special key from the ARGP_KEY_HELP_
|
||
defines, below, describing which other help text TEXT is. The function
|
||
should return either TEXT, if it should be used as-is, a replacement
|
||
string, which should be malloced, and will be freed by argp, or NULL,
|
||
meaning `print nothing'. The value for TEXT is *after* any translation
|
||
has been done, so if any of the replacement text also needs translation,
|
||
that should be done by the filter function. INPUT is either the input
|
||
supplied to argp_parse, or NULL, if argp_help was called directly. */
|
||
char *(*help_filter) (int __key, const char *__text, void *__input);
|
||
|
||
/* If non-zero the strings used in the argp library are translated using
|
||
the domain described by this string. Otherwise the currently installed
|
||
default domain is used. */
|
||
const char *argp_domain;
|
||
};
|
||
|
||
/* Possible KEY arguments to a help filter function. */
|
||
#define ARGP_KEY_HELP_PRE_DOC 0x2000001 /* Help text preceding options. */
|
||
#define ARGP_KEY_HELP_POST_DOC 0x2000002 /* Help text following options. */
|
||
#define ARGP_KEY_HELP_HEADER 0x2000003 /* Option header string. */
|
||
#define ARGP_KEY_HELP_EXTRA 0x2000004 /* After all other documentation;
|
||
TEXT is NULL for this key. */
|
||
/* Explanatory note emitted when duplicate option arguments have been
|
||
suppressed. */
|
||
#define ARGP_KEY_HELP_DUP_ARGS_NOTE 0x2000005
|
||
#define ARGP_KEY_HELP_ARGS_DOC 0x2000006 /* Argument doc string. */
|
||
|
||
/* When an argp has a non-zero CHILDREN field, it should point to a vector of
|
||
argp_child structures, each of which describes a subsidiary argp. */
|
||
struct argp_child
|
||
{
|
||
/* The child parser. */
|
||
const struct argp *argp;
|
||
|
||
/* Flags for this child. */
|
||
int flags;
|
||
|
||
/* If non-zero, an optional header to be printed in help output before the
|
||
child options. As a side-effect, a non-zero value forces the child
|
||
options to be grouped together; to achieve this effect without actually
|
||
printing a header string, use a value of "". */
|
||
const char *header;
|
||
|
||
/* Where to group the child options relative to the other (`consolidated')
|
||
options in the parent argp; the values are the same as the GROUP field
|
||
in argp_option structs, but all child-groupings follow parent options at
|
||
a particular group level. If both this field and HEADER are zero, then
|
||
they aren't grouped at all, but rather merged with the parent options
|
||
(merging the child's grouping levels with the parents). */
|
||
int group;
|
||
};
|
||
|
||
/* Parsing state. This is provided to parsing functions called by argp,
|
||
which may examine and, as noted, modify fields. */
|
||
struct argp_state
|
||
{
|
||
/* The top level ARGP being parsed. */
|
||
const struct argp *root_argp;
|
||
|
||
/* The argument vector being parsed. May be modified. */
|
||
int argc;
|
||
char **argv;
|
||
|
||
/* The index in ARGV of the next arg that to be parsed. May be modified. */
|
||
int next;
|
||
|
||
/* The flags supplied to argp_parse. May be modified. */
|
||
unsigned flags;
|
||
|
||
/* While calling a parsing function with a key of ARGP_KEY_ARG, this is the
|
||
number of the current arg, starting at zero, and incremented after each
|
||
such call returns. At all other times, this is the number of such
|
||
arguments that have been processed. */
|
||
unsigned arg_num;
|
||
|
||
/* If non-zero, the index in ARGV of the first argument following a special
|
||
`--' argument (which prevents anything following being interpreted as an
|
||
option). Only set once argument parsing has proceeded past this point. */
|
||
int quoted;
|
||
|
||
/* An arbitrary pointer passed in from the user. */
|
||
void *input;
|
||
/* Values to pass to child parsers. This vector will be the same length as
|
||
the number of children for the current parser. */
|
||
void **child_inputs;
|
||
|
||
/* For the parser's use. Initialized to 0. */
|
||
void *hook;
|
||
|
||
/* The name used when printing messages. This is initialized to ARGV[0],
|
||
or PROGRAM_INVOCATION_NAME if that is unavailable. */
|
||
char *name;
|
||
|
||
/* Streams used when argp prints something. */
|
||
FILE *err_stream; /* For errors; initialized to stderr. */
|
||
FILE *out_stream; /* For information; initialized to stdout. */
|
||
|
||
void *pstate; /* Private, for use by argp. */
|
||
};
|
||
|
||
/* Flags for argp_parse (note that the defaults are those that are
|
||
convenient for program command line parsing): */
|
||
|
||
/* Don't ignore the first element of ARGV. Normally (and always unless
|
||
ARGP_NO_ERRS is set) the first element of the argument vector is
|
||
skipped for option parsing purposes, as it corresponds to the program name
|
||
in a command line. */
|
||
#define ARGP_PARSE_ARGV0 0x01
|
||
|
||
/* Don't print error messages for unknown options to stderr; unless this flag
|
||
is set, ARGP_PARSE_ARGV0 is ignored, as ARGV[0] is used as the program
|
||
name in the error messages. This flag implies ARGP_NO_EXIT (on the
|
||
assumption that silent exiting upon errors is bad behaviour). */
|
||
#define ARGP_NO_ERRS 0x02
|
||
|
||
/* Don't parse any non-option args. Normally non-option args are parsed by
|
||
calling the parse functions with a key of ARGP_KEY_ARG, and the actual arg
|
||
as the value. Since it's impossible to know which parse function wants to
|
||
handle it, each one is called in turn, until one returns 0 or an error
|
||
other than ARGP_ERR_UNKNOWN; if an argument is handled by no one, the
|
||
argp_parse returns prematurely (but with a return value of 0). If all
|
||
args have been parsed without error, all parsing functions are called one
|
||
last time with a key of ARGP_KEY_END. This flag needn't normally be set,
|
||
as the normal behavior is to stop parsing as soon as some argument can't
|
||
be handled. */
|
||
#define ARGP_NO_ARGS 0x04
|
||
|
||
/* Parse options and arguments in the same order they occur on the command
|
||
line -- normally they're rearranged so that all options come first. */
|
||
#define ARGP_IN_ORDER 0x08
|
||
|
||
/* Don't provide the standard long option --help, which causes usage and
|
||
option help information to be output to stdout, and exit (0) called. */
|
||
#define ARGP_NO_HELP 0x10
|
||
|
||
/* Don't exit on errors (they may still result in error messages). */
|
||
#define ARGP_NO_EXIT 0x20
|
||
|
||
/* Use the gnu getopt `long-only' rules for parsing arguments. */
|
||
#define ARGP_LONG_ONLY 0x40
|
||
|
||
/* Turns off any message-printing/exiting options. */
|
||
#define ARGP_SILENT (ARGP_NO_EXIT | ARGP_NO_ERRS | ARGP_NO_HELP)
|
||
|
||
/* Parse the options strings in ARGC & ARGV according to the options in ARGP.
|
||
FLAGS is one of the ARGP_ flags above. If ARG_INDEX is non-NULL, the
|
||
index in ARGV of the first unparsed option is returned in it. If an
|
||
unknown option is present, ARGP_ERR_UNKNOWN is returned; if some parser
|
||
routine returned a non-zero value, it is returned; otherwise 0 is
|
||
returned. This function may also call exit unless the ARGP_NO_HELP flag
|
||
is set. INPUT is a pointer to a value to be passed in to the parser. */
|
||
extern error_t argp_parse (const struct argp *__restrict __argp,
|
||
int __argc, char **__restrict __argv,
|
||
unsigned __flags, int *__restrict __arg_index,
|
||
void *__restrict __input);
|
||
extern error_t __argp_parse (const struct argp *__restrict __argp,
|
||
int __argc, char **__restrict __argv,
|
||
unsigned __flags, int *__restrict __arg_index,
|
||
void *__restrict __input);
|
||
|
||
/* Global variables. */
|
||
|
||
/* If defined or set by the user program to a non-zero value, then a default
|
||
option --version is added (unless the ARGP_NO_HELP flag is used), which
|
||
will print this string followed by a newline and exit (unless the
|
||
ARGP_NO_EXIT flag is used). Overridden by ARGP_PROGRAM_VERSION_HOOK. */
|
||
extern const char *argp_program_version;
|
||
|
||
/* If defined or set by the user program to a non-zero value, then a default
|
||
option --version is added (unless the ARGP_NO_HELP flag is used), which
|
||
calls this function with a stream to print the version to and a pointer to
|
||
the current parsing state, and then exits (unless the ARGP_NO_EXIT flag is
|
||
used). This variable takes precedent over ARGP_PROGRAM_VERSION. */
|
||
extern void (*argp_program_version_hook) (FILE *__restrict __stream,
|
||
struct argp_state *__restrict
|
||
__state);
|
||
|
||
/* If defined or set by the user program, it should point to string that is
|
||
the bug-reporting address for the program. It will be printed by
|
||
argp_help if the ARGP_HELP_BUG_ADDR flag is set (as it is by various
|
||
standard help messages), embedded in a sentence that says something like
|
||
`Report bugs to ADDR.'. */
|
||
extern const char *argp_program_bug_address;
|
||
|
||
/* The exit status that argp will use when exiting due to a parsing error.
|
||
If not defined or set by the user program, this defaults to EX_USAGE from
|
||
<sysexits.h>. */
|
||
extern error_t argp_err_exit_status;
|
||
|
||
/* Flags for argp_help. */
|
||
#define ARGP_HELP_USAGE 0x01 /* a Usage: message. */
|
||
#define ARGP_HELP_SHORT_USAGE 0x02 /* " but don't actually print options. */
|
||
#define ARGP_HELP_SEE 0x04 /* a `Try ... for more help' message. */
|
||
#define ARGP_HELP_LONG 0x08 /* a long help message. */
|
||
#define ARGP_HELP_PRE_DOC 0x10 /* doc string preceding long help. */
|
||
#define ARGP_HELP_POST_DOC 0x20 /* doc string following long help. */
|
||
#define ARGP_HELP_DOC (ARGP_HELP_PRE_DOC | ARGP_HELP_POST_DOC)
|
||
#define ARGP_HELP_BUG_ADDR 0x40 /* bug report address */
|
||
#define ARGP_HELP_LONG_ONLY 0x80 /* modify output appropriately to
|
||
reflect ARGP_LONG_ONLY mode. */
|
||
|
||
/* These ARGP_HELP flags are only understood by argp_state_help. */
|
||
#define ARGP_HELP_EXIT_ERR 0x100 /* Call exit(1) instead of returning. */
|
||
#define ARGP_HELP_EXIT_OK 0x200 /* Call exit(0) instead of returning. */
|
||
|
||
/* The standard thing to do after a program command line parsing error, if an
|
||
error message has already been printed. */
|
||
#define ARGP_HELP_STD_ERR \
|
||
(ARGP_HELP_SEE | ARGP_HELP_EXIT_ERR)
|
||
/* The standard thing to do after a program command line parsing error, if no
|
||
more specific error message has been printed. */
|
||
#define ARGP_HELP_STD_USAGE \
|
||
(ARGP_HELP_SHORT_USAGE | ARGP_HELP_SEE | ARGP_HELP_EXIT_ERR)
|
||
/* The standard thing to do in response to a --help option. */
|
||
#define ARGP_HELP_STD_HELP \
|
||
(ARGP_HELP_SHORT_USAGE | ARGP_HELP_LONG | ARGP_HELP_EXIT_OK \
|
||
| ARGP_HELP_DOC | ARGP_HELP_BUG_ADDR)
|
||
|
||
/* Output a usage message for ARGP to STREAM. FLAGS are from the set
|
||
ARGP_HELP_*. */
|
||
extern void argp_help (const struct argp *__restrict __argp,
|
||
FILE *__restrict __stream,
|
||
unsigned __flags, char *__restrict __name);
|
||
extern void __argp_help (const struct argp *__restrict __argp,
|
||
FILE *__restrict __stream, unsigned __flags,
|
||
char *__name);
|
||
|
||
/* The following routines are intended to be called from within an argp
|
||
parsing routine (thus taking an argp_state structure as the first
|
||
argument). They may or may not print an error message and exit, depending
|
||
on the flags in STATE -- in any case, the caller should be prepared for
|
||
them *not* to exit, and should return an appropriate error after calling
|
||
them. [argp_usage & argp_error should probably be called argp_state_...,
|
||
but they're used often enough that they should be short] */
|
||
|
||
/* Output, if appropriate, a usage message for STATE to STREAM. FLAGS are
|
||
from the set ARGP_HELP_*. */
|
||
extern void argp_state_help (const struct argp_state *__restrict __state,
|
||
FILE *__restrict __stream,
|
||
unsigned int __flags);
|
||
extern void __argp_state_help (const struct argp_state *__restrict __state,
|
||
FILE *__restrict __stream,
|
||
unsigned int __flags);
|
||
|
||
/* If appropriate, print the printf string FMT and following args, preceded
|
||
by the program name and `:', to stderr, and followed by a `Try ... --help'
|
||
message, then exit (1). */
|
||
extern void argp_error (const struct argp_state *__restrict __state,
|
||
const char *__restrict __fmt, ...)
|
||
PRINTF_STYLE(2,3);
|
||
extern void __argp_error (const struct argp_state *__restrict __state,
|
||
const char *__restrict __fmt, ...)
|
||
PRINTF_STYLE(2,3);
|
||
|
||
/* Similar to the standard gnu error-reporting function error(), but will
|
||
respect the ARGP_NO_EXIT and ARGP_NO_ERRS flags in STATE, and will print
|
||
to STATE->err_stream. This is useful for argument parsing code that is
|
||
shared between program startup (when exiting is desired) and runtime
|
||
option parsing (when typically an error code is returned instead). The
|
||
difference between this function and argp_error is that the latter is for
|
||
*parsing errors*, and the former is for other problems that occur during
|
||
parsing but don't reflect a (syntactic) problem with the input. */
|
||
extern void argp_failure (const struct argp_state *__restrict __state,
|
||
int __status, int __errnum,
|
||
const char *__restrict __fmt, ...)
|
||
PRINTF_STYLE(4,5);
|
||
extern void __argp_failure (const struct argp_state *__restrict __state,
|
||
int __status, int __errnum,
|
||
const char *__restrict __fmt, ...)
|
||
PRINTF_STYLE(4,5);
|
||
|
||
/* Return the input field for ARGP in the parser corresponding to STATE; used
|
||
by the help routines. */
|
||
extern void *_argp_input (const struct argp *__restrict __argp,
|
||
const struct argp_state *__restrict __state)
|
||
__THROW;
|
||
extern void *__argp_input (const struct argp *__restrict __argp,
|
||
const struct argp_state *__restrict __state)
|
||
__THROW;
|
||
|
||
#if 1
|
||
|
||
# if 1
|
||
# define __argp_usage argp_usage
|
||
# define __argp_state_help argp_state_help
|
||
# define __option_is_short _option_is_short
|
||
# define __option_is_end _option_is_end
|
||
# endif
|
||
|
||
# ifndef ARGP_EI
|
||
# define ARGP_EI static __inline
|
||
# endif
|
||
|
||
/* Possibly output the standard usage message for ARGP to stderr and exit. */
|
||
ARGP_EI void
|
||
__argp_usage (const struct argp_state *__state)
|
||
{
|
||
__argp_state_help (__state, stderr, ARGP_HELP_STD_USAGE);
|
||
}
|
||
|
||
/* Returns true if the option OPT is a valid short option. */
|
||
ARGP_EI int
|
||
__NTH (__option_is_short (const struct argp_option *__opt))
|
||
{
|
||
if (__opt->flags & OPTION_DOC)
|
||
return 0;
|
||
else
|
||
{
|
||
int __key = __opt->key;
|
||
return __key > 0 && __key <= UCHAR_MAX && isprint (__key);
|
||
}
|
||
}
|
||
|
||
/* Returns true if the option OPT is in fact the last (unused) entry in an
|
||
options array. */
|
||
ARGP_EI int
|
||
__NTH (__option_is_end (const struct argp_option *__opt))
|
||
{
|
||
return !__opt->key && !__opt->name && !__opt->doc && !__opt->group;
|
||
}
|
||
|
||
# if 1
|
||
# undef __argp_usage
|
||
# undef __argp_state_help
|
||
# undef __option_is_short
|
||
# undef __option_is_end
|
||
# endif
|
||
#endif /* Use extern inlines. */
|
||
|
||
#ifdef __cplusplus
|
||
}
|
||
#endif
|
||
|
||
#endif /* argp.h */
|