/*

* Copyright (C) 2015 - 2018 Intel Corporation.

* All rights reserved.

*

* Redistribution and use in source and binary forms, with or without

* modification, are permitted provided that the following conditions are met:

* 1. Redistributions of source code must retain the above copyright notice(s),

*    this list of conditions and the following disclaimer.

* 2. Redistributions in binary form must reproduce the above copyright notice(s),

*    this list of conditions and the following disclaimer in the documentation

*    and/or other materials provided with the distribution.

*

* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``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(S) 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, OR TORT (INCLUDING NEGLIGENCE

* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF

* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

*/

#pragma once

#include <map>

#include <vector>

#include <string>

class CommandLine

{

public:

    //Parse and write to val when option exist and strtol(...) > 0, otherwise val is not changed.

    //T should be an integer type.

    template<class T>

    void parse_with_strtol(const std::string &option, T &val)

    {

        if(args.count(option)) {

            T tmp = static_cast<T>(strtol(args[option].c_str(), NULL, 10));

            if(tmp > 0)

                val = tmp;

            else

                printf("Warning! Option '%s' may not be set.\n", option.c_str());

        } else {

            //Do not modify val.

            printf("Warning! Option '%s' is not present.\n", option.c_str());

        }

    }

    bool is_option_present(const std::string &option) const

    {

        return args.count(option);

    }

    bool is_option_set(const std::string option, std::string val)

    {

        if(is_option_present(option))

            return (args[option] == val);

        return false;

    }

    const std::string &get_option_value(const std::string &option)

    {

        return args[option];

    }

    CommandLine(int argc, char *argv[])

    {

        for (int i=0; i

            std::string arg(argv[i]);

            size_t found = arg.find("=");

            if(found != std::string::npos) {

                std::string option = arg.substr(0, found);

                std::string val = arg.substr(found+1, arg.length());

                args[option] = val;

            }

        }

    }

private:

    std::map<std::string, std::string> args;

};