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/*
* cmdline.h -- generic commandline editing (uses getopt, only short)
*
* Copyright (c) 1999 Alessandro Rubini (rubini@gnu.org)
* Copyright (c) 1999 Prosa Srl. (prosa@prosa.it)
* Copyright (c) 2010, 2011 Giuseppe Scrivano (gscrivano@gnu.org)
*
* 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 3 of the License, 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, see <http://www.gnu.org/licenses/>.
*
*/
/*
* The options may have different arguments of different type
*/
enum option_type {
CMDLINE_NONE=0, /* no argument after option */
CMDLINE_I, /* integer (any base) */
CMDLINE_D, /* decimal integer */
CMDLINE_X, /* hex integer */
CMDLINE_O, /* octal integer */
CMDLINE_S, /* string */
CMDLINE_F, /* double float */
CMDLINE_P, /* pointer */
};
struct commandline {
int option; /* Single byte: option id */
int type; /* Type of argument, used in sscanf */
void *result; /* Store data here, if non null */
int (*fun)(void *); /* Call if defined: arg is "result" or input string */
char *env; /* Where to get runtime defaults, may be NULL */
char *default_v; /* The compile-time default, may be NULL */
char *descrip; /* For err msg. May have %s's for default and env */
};
/* returns: 0 or -1. "optarg" is global (see getopt) */
extern int commandline(struct commandline *args,
int argc, char **argv, char *errorhead);
/* prints an error message based on "args" */
extern int commandline_errormsg(FILE *f, struct commandline *args,
char *prgname, char *messagehead);
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