// Copyright (c) 2009-2011, Tor M. Aamodt, Wilson W.L. Fung
// The University of British Columbia
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// Redistributions of source code must retain the above copyright notice, this
// list of conditions and the following disclaimer.
// Redistributions in binary form must reproduce the above copyright notice, this
// list of conditions and the following disclaimer in the documentation and/or
// other materials provided with the distribution.
// Neither the name of The University of British Columbia nor the names of its
// contributors may be used to endorse or promote products derived from this
// software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#pragma once 

#include <stdio.h>
#include <stdlib.h>

// pointer to C++ class
typedef class OptionParser *option_parser_t;

// data type of the option
enum option_dtype {
    OPT_INT32,
    OPT_UINT32,
    OPT_INT64,
    OPT_UINT64,
    OPT_BOOL,
    OPT_FLOAT,
    OPT_DOUBLE,
    OPT_CSTR
};

#ifdef __cplusplus
extern "C" {
#endif 

// create and destroy option parser
option_parser_t option_parser_create();
void option_parser_destroy(option_parser_t opp);

// register new option
void option_parser_register(option_parser_t opp, 
                            const char *name, 
                            enum option_dtype type, 
                            void *variable, 
                            const char *desc,  
                            const char *defaultvalue);

// parse command line
void option_parser_cmdline(option_parser_t opp,
                           int argc, const char *argv[]);

// parse config file
void option_parser_cfgfile(option_parser_t opp,
                           const char *filename);

// print options
void option_parser_print(option_parser_t opp, 
                         FILE *fout);

#ifdef __cplusplus
};
#endif