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/* Random helpful option parsing functions
Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
Written by Miles Bader <miles@gnu.ai.mit.edu>
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2, or (at
your option) any later version.
This program 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
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#ifndef __PARSE_H__
#define __PARSE_H__
#include <errno.h>
#include <argp.h>
/* For each string in the comma-separated list in ARG, call ADD_FN; if ARG is
empty and DEFAULT_FN isn't NULL, then call ADD_FN on the resutl of calling
DEFAULT_FN instead, otherwise signal an error. */
extern error_t
parse_strlist (char *arg,
error_t (*add_fn)(const char *str, struct argp_state *state),
const char *(*default_fn)(struct argp_state *state),
const char *type_name, struct argp_state *state);
/* For each numeric string in the comma-separated list in ARG, call ADD_FN;
if ARG is empty and DEFAULT_FN isn't NULL, then call DEF_FN to get a number,
and call ADD_FN on that, otherwise signal an error. If any member of the
list isn't a number, and LOOKUP_FN isn't NULL, then it is called to return
an integer for the string. LOOKUP_FN should signal an error itself it
there's some problem parsing the string. */
extern error_t
parse_numlist (char *arg,
error_t (*add_fn)(unsigned num, struct argp_state *state),
int (*default_fn)(struct argp_state *state),
int (*lookup_fn)(const char *str, struct argp_state *state),
const char *type_name, struct argp_state *state);
/* Return the index of which of a set of strings ARG matches, including
non-ambiguous partial matches. CHOICE_FN should be a function that
returns the name of the Nth option, or 0 if N is out of range, and KIND
should be a string that describes what's being matched, for use in error
messages. If ALLOW_MISMATCHES is true, then -1 is returned in the event
that ARG matches no entry , otherwise, an error message is printed and the
program exits in this event. If ARG is an ambiguous match, an error
message is printed and the program exits. */
extern int
parse_enum (const char *arg,
const char *(*choice_fn)(unsigned n),
const char *kind, int allow_mismatches,
struct argp_state *state);
#endif /* __PARSE_H__ */
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