InputParser.hpp

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#pragma once
 
#include <algorithm>
#include <string>
#include <vector>
 
class InputParser {
  private:
    std::vector<std::string> _tokens;
 
  public:
    InputParser(const int &argc, char **argv)
    {
        for (int i = 1; i < argc; ++i)
        {
            _tokens.emplace_back(argv[i]);
        }
    }
 
    [[nodiscard]] const std::string &getCmdOption(const std::string &option) const
    {
        std::vector<std::string>::const_iterator itr;
        itr = std::find(_tokens.begin(), _tokens.end(), option);
        if (itr != _tokens.end() && ++itr != _tokens.end())
        {
            return *itr;
        }
        static const std::string empty_string;
        return empty_string;
    }
 
    [[nodiscard]] std::vector<std::pair<std::string, std::string>> getCmdOptions() const
    {
        std::vector<std::pair<std::string, std::string>> options;
        for (auto itr = _tokens.begin(); itr != _tokens.end(); ++itr)
        {
            if (!itr->empty() && itr->at(0) == '-')
            {
                auto nextItr = std::next(itr);
                if (nextItr != _tokens.end() && !nextItr->empty() && nextItr->at(0) != '-')
                {
                    options.emplace_back(*itr, *(nextItr));
                }
                else
                {
                    options.emplace_back(*itr, "");
                }
            }
        }
        return options;
    }
 
    [[nodiscard]] bool cmdOptionExists(const std::string &option) const
    {
        return std::find(_tokens.begin(), _tokens.end(), option) != _tokens.end();
    }
};