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