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/** BEGIN COPYRIGHT BLOCK
* Copyright (C) 2001 Sun Microsystems, Inc. Used by permission.
* Copyright (C) 2005 Red Hat, Inc.
* All rights reserved.
*
* License: GPL (version 3 or any later version).
* See LICENSE for details.
* END COPYRIGHT BLOCK **/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
/*
* getopt_ext.h - long option names
*
*
*
*/
#ifndef _GETOPT_EXT_H
#define _GETOPT_EXT_H
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#ifdef LINUX
#include <getopt.h>
#endif
#ifdef __cplusplus
extern "C" {
#endif
/*
* getopt_ext() is a rudimentary extension to getopt() to facilitate
* handling of long (wordier) option names.
*
* A long option is indicated by placing a "--" in front of the option
* name.
*
* Like getopt(), getopt_ext() also returns a single letter (actually an int)
* when an option is recognized. Therefore, the loop for processing long
* options and single letter options can be combined (see example in
* slapd/main.c)
*
* getopt_ext() first processes all the long options it can find. Currently,
* it does a "strcmp" to check for the validity of the option name (i.e.,
* the option name has to match exactly).
*
* Once all the long options are handled, getopt_ext() uses getopt() to
* process the remaining options.
*
* getopt_ext() rearranges "argv" when it finds long options that it
* recognizes. The recognized options (and their parameters) are pushed
* to the end.
*
* Single letter options are specified similar to getopt()
* Long options are specified using a list of "struct opt_ext". Each long
* option consists of string that identifies the option, a type that specifies
* if the option requires an argument and the single letter returned by
* getopt_ext() when the option is encountered. For example,
* {"verbose",ArgNone,'v'} specifies a long option (--verbose) that requires
* no arguments and for which, getopt_ext() returns a 'v' as the return value.
* {"instancedir",ArgRequired,'D'} specifies a long option (--instancedir dir)
* that requires an argument.
*
*
*/
extern char *optarg_ext;
extern int optind_ext;
extern int optopt_ext;
extern int opterr_ext;
extern int optind_last;
extern int optind, opterr, optopt;
extern char *optarg;
typedef enum {
ArgNone,
ArgRequired,
ArgOptional
} GetOptExtArgType;
struct opt_ext
{
const char *o_string;
const GetOptExtArgType o_type;
const char o_return;
};
int getopt_ext(int argc,
char **argv,
const char *optstring,
const struct opt_ext *longOpts,
int *longOptIndex);
#ifdef __cplusplus
}
#endif
#endif
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