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107/****************************************************************************
* include/getopt.h
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
#ifndef __INCLUDE_GETOPT_H
#define __INCLUDE_GETOPT_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <nuttx/compiler.h>
#include <unistd.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#define no_argument 0
#define required_argument 1
#define optional_argument 2
/****************************************************************************
* Public Type Definitions
****************************************************************************/
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
struct option
{
FAR const char *name;
int has_arg;
FAR int *flag;
int val;
};
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
/****************************************************************************
* Name: getopt_long
*
* Description:
* The getopt_long() function works like getopt() except that it also
* accepts long options, started with two dashes. (If the program accepts
* only long options, then optstring should be specified as an empty
* string (""), not NULL.) Long option names may be abbreviated if the
* abbreviation is unique or is an exact match for some defined option
*
****************************************************************************/
int getopt_long(int argc, FAR char * const argv[],
FAR const char *optstring,
FAR const struct option *longopts,
FAR int *longindex);
/****************************************************************************
* Name: getopt_long_only
*
* Description:
* getopt_long_only() is like getopt_long(), but '-' as well as "--" can
* indicate a long option. If an option that starts with '-' (not "--")
* doesn't match a long option, but does match a short option, it is
* parsed as a short option instead.
*
****************************************************************************/
int getopt_long_only(int argc, FAR char * const argv[],
FAR const char *optstring,
FAR const struct option *longopts,
FAR int *longindex);
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __INCLUDE_GETOPT_H */